30) SANYO ITEMS

SANYO Electric Co., Ltd. (三洋電機株式会社, San'yō Denki Kabushiki-gaisha?) (TYO: 6764, NASDAQ: SANYY) is a major electronics company and member of the Fortune 500 whose headquarters is located in Moriguchi, Osaka prefecture, Japan. Sanyo targets the middle of the market and has over 324 offices and plants worldwide[citation needed], together employing more than 11,000 employees.

On November 2, 2008, Sanyo and Panasonic announced that they have agreed on the main points of a proposed buyout that would make Sanyo a subsidiary of Panasonic and a formal announcement of the acquisition was made on Sanyo's web site on December 19, 2008.Panasonic plans to make an offer in late July or early August and make Sanyo a subsidiary in September.

Corporate culture
Sanyo utilizes an extensive socialization process for new employees, so that they will be acclimatized to Sanyo's corporate culture. New employees take a five-month course during which they eat together and share company-provided sleeping accommodation. They learn everything from basic job requirements to company expectations for personal grooming and the appropriate way in which to address their coworkers and superiors.

History
Sanyo was founded when Toshio Iue (井植 歳男 Iue Toshio, 1902-1969), the brother-in-law of Konosuke Matsushita and also a former Matsushita employee, was lent an unused Matsushita plant in 1947 and used it to make bicycle generator lamps. Sanyo was incorporated in 1950 and in 1952 it made Japan's first plastic radio and in 1954 Japan's first pulsator-type washing machine. The company's name means three oceans in Japanese, referring to the founder's ambition to sell their products worldwide, across the Atlantic, Pacific and Indian oceans.

Technologically Sanyo has had good ties with Sony, supporting the Betamax video format from invention until the mid 1980s (the best selling video recorder in the UK in 1983 was the Sanyo VTC5000), and later being an early adopter of the highly successful Video8 camcorder format. More recently, though, Sanyo decided against supporting Sony's format, the Blu-ray Disc, and instead gave its backing to Toshiba's HD DVD. This was ultimately unsuccessful, however, as Sony's Blu-ray triumphed.

In North America, Sanyo manufactures CDMA cellular phones exclusively for Sprint-Nextel corporation's Sprint PCS brand in the United States, and for Bell Mobility in Canada. For three consecutive years, Sanyo received the J.D. Power and Associates award for having the highest overall satisfaction out of the eight most popular mobile phone manufacturers. However in 2005 Sanyo tied with LG for this position.

The 2004 Chūetsu earthquake severely struck Sanyo's semiconductor plant and as a result Sanyo recorded a huge financial loss for that year. The 2005 fiscal year financial results saw a 205 billion yen net income loss. The same year the company announced a restructuring plan called the Sanyo Evolution Project, launching a new corporate vision to make the corporation into an environmental company, plowing investment into strong products like rechargeable batteries, solar photovoltaics, air conditioning, hybrid car batteries in a joint venture with Honda Motor Co. Ltd. (two firms would develop a nickel hydrogen battery) and key consumer electronics such as the Xacti camera, projectors and mobile phones.

SANYO CAMERAS







SANYO WEBCAMS







SANYO TVs

29) SONY ITEMS

Sony Corporation (ソニー株式会社, Sonī Kabushiki Gaisha?) is a multinational conglomerate corporation headquartered in Minato, Tokyo, Japan, and one of the world's largest media conglomerates with revenue exceeding ¥ 7.730.0 trillion, or $78.88 billion U.S. (FY2008). Sony is one of the leading manufacturers of electronics, video, communications, video game consoles, and information technology products for the consumer and professional markets. Its name is derived from sonus, the Latin word for sound.

Sony Corporation is the electronics business unit and the parent company of the Sony Group, which is engaged in business through its five operating segments—electronics, games, entertainment (motion pictures and music), financial services and other. These make Sony one of the most comprehensive entertainment companies in the world. Sony's principal business operations include Sony Corporation (Sony Electronics in the U.S.), Sony Pictures Entertainment, Sony Computer Entertainment, Sony Music Entertainment, Sony Ericsson, and Sony Financial. As a semiconductor maker, Sony is among the Worldwide Top 20 Semiconductor Sales Leaders. The company's slogan is Sony. Like no other.

History
In 1945, after World War II, Masaru Ibuka started a radio repair shop in a bombed-out building in Tokyo. The next year, he was joined by his colleague Akio Morita and they founded a company called Tokyo Tsushin Kogyo K.K., which translates in English to Tokyo Telecommunications Engineering Corporation. The company built Japan's first tape recorder called the Type-G.


Masaru Ibuka, the co-founder of Sony


In the early 1950s, Ibuka traveled in the United States and heard about Bell Labs' invention of the transistor. He convinced Bell to license the transistor technology to his Japanese company. While most American companies were researching the transistor for its military applications, Ibuka looked to apply it to communications. Although the American companies Regency and Texas Instruments built the first transistor radios, it was Ibuka's company that made them commercially successful for the first time. In August 1955, Tokyo Telecommunications Engineering released the Sony TR-55, Japan's first commercially produced transistor radio. They followed up in December of the same year by releasing the Sony TR-72, a product that won
favor both within Japan and in export markets, including Canada, Australia, the Netherlands and Germany. Featuring six transistors, push-pull output and greatly improved sound quality, the TR-72 continued to be a popular seller into the early sixties.

In May 1956, the company released the TR-6, which featured an innovative slim design and sound quality capable of rivaling portable tube radios. It was for the TR-6 that Sony first contracted "Atchan", a cartoon character created by Fuyuhiko Okabe, to become its advertising character. Now known as "Sony Boy", the character first appeared in a cartoon ad holding a TR-6 to his ear, but went on to represent the company in ads for a variety of products well into the mid-sixties. The following year, 1957, Tokyo Telecommunications Engineering came out with the TR-63 model, then the smallest (112 × 71 × 32 mm) transistor radio in commercial production. It was a worldwide commercial success.

University of Arizona professor Michael Brian Schiffer, Ph.D., says, "Sony was not first, but its transistor radio was the most successful. The TR-63 of 1957 cracked open the U.S. market and launched the new industry of consumer microelectronics." By the mid 1950s, American teens had begun buying portable transistor radios in huge numbers, helping to propel the fledgling industry from an estimated 100,000 units in 1955 to 5,000,000 units by the end of 1968.

Sony's headquarters moved to Minato, Tokyo from Shinagawa, Tokyo around the end of 2006.

Sony products, technologies and proprietary formats
Sony has historically been notable for creating its own in-house standards for new recording and storage technologies instead of adopting those of other manufacturers and standards bodies. The most infamous of these was the videotape format war of the early 1980s, when Sony marketed the Betamax system for video cassette recorders against the VHS format developed by JVC. In the end, VHS gained critical mass in the marketplace and became the worldwide standard for consumer VCRs and Sony adopted the format. While Betamax is for all practical purposes an obsolete format, a professional-oriented component video format called Betacam that was derived from Betamax is still used today, especially in the film and television industry.

In 1968 Sony introduced the Trinitron brand name for its line of aperture grille cathode ray tube televisions and (later) computer monitors. Trinitron displays are still produced, but only for markets such as Pakistan, Bangladesh, India and China. Sony discontinued the last Trinitron-based television set in the USA Spring of 2007. Trinitron computer monitors were discontinued in 2005.

Sony launched the Betamax videocassette recording format in 1975. In 1979 the Walkman brand was introduced, in the form of the world's first portable music player.

1982 saw the launch of Sony's professional Betacam videotape format and the collaborative Compact Disc format. In 1983 Sony introduced 90 mm micro diskettes (better known as 3.5-inch (89 mm) floppy disks), which it had developed at a time when there were 4" floppy disks and a lot of variations from different companies to replace the then on-going 5.25" floppy disks. Sony had great success and the format became dominant; 3.5" floppy disks gradually became obsolete as they were replaced by current media formats. In 1983 Sony launched the MSX, a home computer system, and introduced the world (with their counterpart Philips) to the Compact Disc or CD. In 1984 Sony launched the Discman series which extended their Walkman brand to portable CD products. In 1985 Sony launched their Handycam products and the Video8 format. Video8 and the follow-on hi-band Hi8 format became popular in the consumer camcorder market. In 1987 Sony launched the 4 mm DAT or Digital Audio Tape as a new digital audio tape standard.

SONY MONITORS
This extension of the monitor provides a ready-made area for keeping Post-it® notes in one place while also sporting a handy groove which is ideal for holding pens.

Available in size screens with both digital (DVI-D) and analogue (HD-15) interfaces as standard, the E Series redefines the home or work office and helps make sure desks remain tidy and organised.

The Sony personal computer displays range was brought under Sony Europe’s IT Peripherals umbrella in April 2006 alongside the storage products to ensure a dedicated refocus on these products through indirect channels. The E Series is the first of the new range of displays to be made available in this way and the exciting new style is designed to attract attention.




SONY TELEVISIONS



SONY CAMERAS






SONY CELL SETS

28) COMPUTER 'S POWER SUPPLY

Power supply is a reference to a source of electrical power. A device or system that supplies electrical or other types of energy to an output load or group of loads is called a power supply unit or PSU. The term is most commonly applied to electrical energy supplies, less often to mechanical ones, and rarely to others.

Electrical power supplies
This term covers the power distribution system together with any other primary or secondary sources of energy such as:

Conversion of one form of electrical power to another desired form and voltage. This typically involves converting 120 or 240 volt AC supplied by a utility company (see electricity generation) to a well-regulated lower voltage DC for electronic devices. Low voltage, low power DC power supply units are commonly integrated with the devices they supply, such as computers and household electronics. For other examples, see switched-mode power supply, linear regulator, rectifier and inverter (electrical).
Batteries
Chemical fuel cells and other forms of energy storage systems
Solar power
Generators or alternators (particularly useful in vehicles of all shapes and sizes, where the engine has torque to spare, or in semi-portable units containing an internal combustion engine and a generator) (For large-scale power supplies, see electricity generation.)
Constraints that commonly affect power supplies are the amount of power they can supply, how long they can supply it without needing some kind of refueling or recharging, how stable their output voltage or current is under varying load conditions, and whether they provide continuous power or pulses.

The regulation of power supplies is done by incorporating circuitry to tightly control the output voltage and/or current of the power supply to a specific value. The specific value is closely maintained despite variations in the load presented to the power supply's output, or any reasonable voltage variation at the power supply's input. This kind of regulation is commonly categorized as a Stabilized power supply.

Power supply types
Power supplies for electronic devices can be broadly divided into linear and switching power supplies. The linear supply is a relatively simple design that becomes increasingly bulky and heavy for high current devices; voltage regulation in a linear supply can result in low efficiency. A switched-mode supply of the same rating as a linear supply will be smaller, is usually more efficient, but will be more complex.

Battery power supply
A battery is a type of linear power supply that offers benefits that traditional line-operated power supplies lack: mobility, portability, and reliability. A battery consists of multiple electrochemical cells connected to provide the voltage desired.

The most commonly used dry-cell battery is the carbon-zinc dry cell battery. Dry-cell batteries are made by stacking a carbon plate, a layer of electrolyte paste, and a zinc plate alternately until the desired total voltage is achieved. The most common dry-cell batteries have one of the following voltages: 1.5, 3, 6, 9, 22.5, 45, and 90. During the discharge of a carbon-zinc battery, the zinc metal is converted to a zinc salt in the electrolyte, and magnesium dioxide is reduced at the carbon electrode. These actions establish a voltage of approximately 1.5 V.

The lead-acid storage battery may be used. This battery is rechargeable; it consists of lead and lead/dioxide electrodes which are immersed in sulfuric acid. When fully charged, this type of battery has a 2.06-2.14 V potential. During discharge, the lead is converted to lead sulfate and the sulfuric acid is converted to water. When the battery is charging, the lead sulfate is converted back to lead and lead dioxide.

A nickel-cadmium battery has become more popular in recent years.This battery cell is completely sealed and rechargeable. The electrolyte is not involved in the electrode reaction, making the voltage constant over the span of the batteries long service life. During the charging process, nickel oxide is oxidized to its higher oxidation state and cadmium oxide is reduced. The nickel-cadmium batteries have many benefits. They can be stored both charged and uncharged. They have a long service life, high current availabilities, constant voltage, and the ability to be recharged.

Linear power supply
An AC powered linear power supply usually uses a transformer to convert the voltage from the wall outlet (mains) to a different, usually a lower voltage. If it is used to produce DC, a rectifier is used. A capacitor is used to smooth the pulsating current from the rectifier. Some small periodic deviations from smooth direct current will remain, which is known as ripple. These pulsations occur at a frequency related to the AC power frequency (for example, a multiple of 50 or 60 Hz).

The voltage produced by an unregulated power supply will vary depending on the load and on variations in the AC supply voltage. For critical electronics applications a linear regulator will be used to stabilize and adjust the voltage. This regulator will also greatly reduce the ripple and noise in the output direct current. Linear regulators often provide current limiting, protecting the power supply and attached circuit from overcurrent.

Adjustable linear power supplies are common laboratory and service shop test equipment, allowing the output voltage to be set over a wide range. For example, a bench power supply used by circuit designers may be adjustable up to 30 volts and up to 5 amperes output. Some can be driven by an external signal, for example, for applications requiring a pulsed output.

The simplest DC power supply circuit consists of a single diode and resistor in series with the AC supply. This circuit is common in rechargeable flashlights

A home-made linear power supply (used here to power amateur radio equipment


AC/ DC supply
In the past, mains electricity was supplied as DC in some regions, AC in others. A simple, cheap linear power supply would run directly from either AC or DC mains, often without using a transformer. The power supply consisted of a rectifier and a capacitor filter. The rectifier was essentially a conductor, having no sudden effect when operating from DC.

Switched-mode power supply
A switched-mode power supply (SMPS) works on a different principle. AC mains input is directly rectified without the use of a transformer, to obtain a DC voltage. This voltage is then sliced into small pieces by a high-speed electronic switch. The size of these slices grows larger as power output requirements increase.

The input power slicing occurs at a very high speed (typically 10 kHz — 1 MHz). High frequency and high voltages in this first stage permit much smaller step down transformers than are in a linear power supply. After the transformer secondary, the AC is again rectified to DC. To keep output voltage constant, the power supply needs a sophisticated feedback controller to monitor current draw by the load.

Modern switched-mode power supplies often include additional safety features such as the crowbar circuit to help protect the device and the user from harm. In the event that an abnormal high current power draw is detected, the switched-mode supply can assume this is a direct short and will shut itself down before damage is done. For decades PC computer power supplies have also provided a power good signal to the motherboard which prevents operation when abnormal supply voltages are present.

Switched mode power supplies have an absolute limit on their minimum current output. They are only able to output above a certain power level and cannot function below that point. In a no-load condition the frequency of the power slicing circuit increases to great speed, causing the isolation transformer to act as a tesla coil, causing damage due to the resulting very high voltage power spikes. Switched-mode supplies with protection circuits may briefly turn on but then shut down when no load has been detected. A very small low-power dummy load such as a ceramic power resistor or 10 watt light bulb can be attached to the supply to allow it to run with no primary load attached.

Power factor has become a recent issue of concern for computer manufacturers. Switched mode power supplies have traditionally been a source of power line harmonics and have a very poor power factor. Many computer power supplies built in the last few years now include power factor correction built right into the switched-mode supply, and may advertise the fact that they offer 1.0 power factor.

By slicing up the sinusoidal AC wave into very small discrete pieces, the portion of the alternating current not used stays in the power line as very small spikes of power that cannot be utilized by AC motors and results in waste heating of power line transformers. Hundreds of switched mode power supplies in a building can result in poor power quality for other customers surrounding that building, and high electric bills for the company if they are billed according to their power factor in addition to the actual power used. Filtering capacitor banks may be needed on the building power mains to suppress and absorb these negative power factor effects.


A computer's switched mode power supply unit



Programmable power supply
Programmable power supplies are those in which the output voltage can be varied remotely. One possible option is digital control by a computer interface. Variable properties include voltage, current, and frequency. This type of supply is composed of a processor, voltage/current programming circuits, current shunt, and voltage/current read-back circuits.

Programmable power supplies can furnish DC, AC, or both types of output. The AC output can be either single-phase or three-phase. Single-phase is generally used for low-voltage, while three-phase is more common for high-voltage power supplies.

When choosing a programmable power supply, several specifications should be considered. For AC supplies, output voltage, voltage accuracy, output frequency, and output current are important attributes. For DC supplies, output voltage, voltage accuracy, current, and power are important characteristics. Many special features are also available, including computer interface, overcurrent protection, overvoltage protection, short circuit protection, and temperature compensation. Programmable power supplies also come in a variety of forms. Some of those are modular, board-mounted, wall-mounted, floor-mounted or bench top.

Programmable power supplies are now used in many applications. Some examples include automated equipment testing, crystal growth monitoring, and differential thermal analysis

Uninterruptible power supply
An Uninterruptible Power Supply (UPS) takes its power from two or more sources simultaneously. It is usually powered directly from the AC mains, while simultaneously charging a storage battery. Should there be a dropout or failure of the mains, the battery instantly takes over so that the load never experiences an interruption. Such a scheme can supply power as long as the battery charge suffices, e.g., in a computer installation, giving the operator sufficient time to effect an orderly system shutdown without loss of data. Other UPS schemes may use an internal combustion engine or turbine to continuously supply power to a system in parallel with power coming from the AC mains. The engine-driven generators would normally be idling, but could come to full power in a matter of a few seconds in order to keep vital equipment running without interruption. Such a scheme might be found in hospitals or telephone central offices.

High-voltage power supply
High voltage refers to an output on the order of hundreds or thousands of volts. High-voltage power supplies use a linear setup to produce an output voltage in this range.

When choosing a high-voltage power supply, there are several options to consider. Some of these are maximum current, maximum power, maximum voltage, output polarity, user interface, and style. The first four of these characteristics of course depend upon the supply's intended application. There are many available types of user interfaces. For example, the interface may be local in the form of a digital meter, or analog meter. Also, the interface can be remote, as in a computer connection. Numerous styles of high-voltage power supplies are also manufactured. Available models come in printed circuit board mount, open frame (as designed to be incorporated into an instrument), and rack mount. Models with multiple outputs can also be found

Voltage multipliers
Voltage multipliers, as the name implies, are circuits designed to multiply the input voltage. The input voltage may be doubled (voltage doubler), tripled (voltage tripler), quadrupled (voltage quadrupler), etc. Voltage multipliers are also power converters. An AC input is converted to a higher DC output. These circuits allow high voltages to be obtained using a much lower voltage AC source.

Typically, voltage multipliers are composed of half-wave rectifiers, capacitors, and diodes. For example, a voltage tripler consists of three half-wave rectifiers, three capacitors, and three diodes. Full-wave rectifiers may be used in a different configuration to achieve even higher voltages. Also, both parallel and series configurations are available. For parallel multipliers, a higher voltage rating is required at each consecutive multiplication stage, but less capacitance is required. The voltage capability of the capacitor limits the maximum output voltage.

Voltage multipliers have many applications. For example, voltage multipliers can be found in everyday items like televisions and photocopiers. Even more applications can be found in the laboratory, such as cathode ray tubes, oscilloscopes, and photomultiplier tubes.

A modern computer power supply is a switched-mode supply designed to convert 110-240 V AC power from the mains supply, to several output both positive (and historically negative) DC voltages in the range + 12V,-12V,+5V,+5VBs and +3.3V. The first generation of computers power supplies were linear devices, but as cost became a driving factor, and weight became important, switched mode supplies are almost universal.

The diverse collection of output voltages also have widely varying current draw requirements, which are difficult to all be supplied from the same switched-mode source. Consequently most modern computer power supplies actually consist of several different switched mode supplies, each producing just one voltage component and each able to vary its output based on component power requirements, and all are linked together to shut down as a group in the event of a fault condition.

The most common modern computer power supplies are built to conform to the ATX form factor. The power rating of a PC power supply is not officially certified and is self-claimed by each manufacturer.A common way to reach the power figure for PC PSUs is by adding the power available on each rail, which will not give a true power figure. The more reputable makers advertise "True Wattage Rated" to give consumers the idea that they can trust the power advertised.


AC adapter
A linear or switched-mode power supply (or in some cases just a transformer) that is built into the top of a plug is known as a "wall wart", "power brick", "plug pack", "plug-in adapter", "adapter block", "domestic mains adapter" or just "power adapter". They are even more diverse than their names; often with either the same kind of DC plug offering different voltage or polarity, or a different plug offering the same voltage. "Universal" adapters attempt to replace missing or damaged ones, using multiple plugs and selectors for different voltages and polarities. Replacement power supplies must match the voltage of, and supply at least as much current as, the original power supply.

The least expensive AC units consist solely of a small transformer, while DC adapters include a few additional diodes. Whether or not a load is connected to the power adapter, the transformer has a magnetic field continuously present and normally cannot be completely turned off unless unplugged.

Because they consume standby power, they are sometimes known as "electricity vampires" and may be plugged into a power strip to allow turning them off. Expensive switched-mode power supplies can cut off leaky electrolyte-capacitors, use powerless MOSFETs, and reduce their working frequency to get a gulp of energy once in a while to power, for example, a clock, which would otherwise need a battery.

This type of power supply is popular among manufacturers of low cost electrical items because:

Switched mode mobile phone charger


1.Devices sold in the global marketplace don't need to be individually configured for 120 volt or 230 volt operation, just sold with the appropriate AC adapter.
2.The device itself doesn't need to be tested for compliance with electrical safety regulations. Only the adapter needs to be tested.
3.Product development becomes faster and cheaper, because the heat produced by the power supply is outside of the product.
4.The device itself can be smaller and lighter, since it does not contain the power supply.

SOME POWER SUPPLIES OF COMPUTERS

27) PHILIPS ITEMS

Koninklijke Philips Electronics N.V. (Royal Philips Electronics Inc.), most commonly known as Philips, (Euronext: PHIA, NYSE: PHG) is a Dutch electronics company.

Philips is one of the largest electronics companies in the world. In 2007, its sales were €26.79 billion. The company employs 123,800 people in more than 60 countries.

Philips is organized in a number of sectors: Philips Consumer Lifestyle (formerly Philips Consumer Electronics and Philips Domestic Appliances and Personal Care), Philips Lighting and Philips Healthcare (formerly Philips Medical Systems).

Philips headquarters in Amsterdam


History
The company was founded in 1891 by Gerard Philips, a maternal cousin of Karl Marx, in Eindhoven, the Netherlands. Its first products were light bulbs and other electro technical equipment. Its first factory remains as a museum devoted to light sculpture. In the 1920s, the company started to manufacture other products, such as vacuum tubes (also known worldwide as 'valves'), In 1927 they acquired the British electronic valve manufacturers Mullard and in 1932 the German tube manufacturer Valvo, both of which became subsidiaries. In 1939 they introduced their electric razor, the Philishave (marketed in the USA using the Norelco brand name). Also on March 11, 1927 Philips went on the air with a station called PCJ now known as Radio Netherlands. It was broadcast to the Dutch East Indies. The host of the first broadcast was Eddy Startz and from 1927 until he retired in 1969 he hosted a show called Happy Station. The only time the station went off air was when the Nazis invaded Holland. At the end of the war PCJ changed its name to Radio Netherlands and has continued broadcasting to this day.

The company was also instrumental in the revival of the Stirling engine.

On 9 May 1940, the Philips directors were informed about the German invasion of the Netherlands to take place the next day. They decided to leave the country and flee to the United States, taking a large amount of the company capital with them. Operating from the US as the North American Philips Company, they managed to run the company throughout the war. At the same time, the company itself was moved to the Netherlands Antilles (just on paper) to keep it out of German hands.

It is also believed that Philips—both before and during the war—supplied enormous amounts of electric equipment to the German occupation forces, which has led some people to think that the company collaborated with the Nazis, like many other firms in their day. However, there is no evidence to suggest that Philips itself or its management ever sympathized with the Nazis or their ideologies. The only Philips family member who did not leave the country, Frits Philips, saved the lives of 382 Jews by indicating to the Nazis that they were indispensable for the production process at Philips. In 1996, he was awarded the Yad Vashem reward by the Israeli ambassador for his actions. There is little Philips could have done to prevent the Germans from abusing their production facilities and forcing their employees to perform slave labour during the occupation. The production facility in Eindhoven was the only Dutch industrial target that was deliberately bombed by the allied forces during the war.

Postwar era
After the war the company was moved back to the Netherlands, with their headquarters in Eindhoven. Many secret research facilities had been locked and successfully hidden from the invaders, which allowed the company to get up to speed again quickly after the war.

In 1950, Philips formed Philips Records.

Philips introduced the audio Compact Cassette tape in 1963 and was wildly successful. Compact cassettes were initially used for dictation machines for office typing stenographers and professional journalists. As their sound quality improved, cassettes would also be used to record sound and became the second mass media to sell recorded music alongside vinyl records. Philips introduced the first combination portable radio and cassette recorder which is marketed as the "radiorecorder" and which is now better known as the boom box. Later the cassette was used in telephone answering machines including a special form of cassette where the tape was wound on an endless loop. The C-cassette found itself also as the first mass storage device for early personal computers in the 1970s and 1980s. Philips would also reduce the cassette size for the professional needs, first with the mini cassette and later the microcassette which were predominant dictation machines up to the advent of fully digital dictation machines.

In 1972 Philips launched the world's first home video cassette recorder, the N1500 with bulky video cassettes that could record 30 minutes or 45 minutes. Later one hour tapes were also offered. As competition came from Sony's Betamax and the VHS group of manufacturers, Philips introduced the N1700 system which allowed double length recording and for the first time would fit a 2 hour movie onto one video cassette. This idea was soon copied by the Japanese makers whose tapes were significantly cheaper. Philips made one last attempt at a new standard for video recorders with the Video 2000 system with tapes that could be used on both sides and had thus 8 hours of total recording time. As Philips only sold its systems on the PAL standard and in Europe, and the Japanese makers sold globally, the scale advantages of the Japanese proved insurmountable and Philips withdrew the V2000 system and joined the VHS Coalition.

Philips had early developments of a laser disk for selling movies but delayed its commercial launch for fear of cannibalizing its video recorder sales. Later Philips would join with Sony to launch the first commercial laser disk standard and players, and again in 1982 with Sony to launch Compact Disc. This evolved to the present day DVD, which Philips launched with Sony in 1997.

In 1991, the company's name was changed from N.V. Philips Gloeilampenfabrieken to Philips Electronics N.V. At the same time, North American Philips was formally dissolved, and a new corporate division was formed in the U.S. with the name Philips Electronics North America Corp.

In 1997 the decision was made to move the headquarters from Eindhoven to Amsterdam, along with the corporate name change to Koninklijke Philips Electronics N.V. The move was completed in 2001. Initially, the company was housed in the Rembrandt tower, but in 2002 they moved again, this time to the Breitner tower. In a sense, the move to Amsterdam can be considered a return to the company's roots, because Gerard Philips lived in Amsterdam when he came up with the idea of building a light bulb factory. He also conducted his first experiments in the field of mass production of light bulbs there, together with Jan Reesse. Philips Lighting, Philips Research, Philips Semiconductors (spun off as NXP in September 2006) and Philips Design, are still based in Eindhoven. Philips Healthcare is headquartered in both Best, Netherlands (just outside Eindhoven) and Andover, Massachusetts, United States (near Boston).


With lead-free design


With a Digital Deflection CPU, one-touch brightness enhancement, high brightness Real Flat CRT tube and ideal screen size, the 107S9 delivers an unbeatable mix of performance and value plus environment-friendly lead-free design.

Philips Philips GC4310 / Azur Precise Iron


•Steam tip Powerful shot of steam - 100g/min Drip-stop system Vertical steam Careeza soleplate High continuous steam output - upto 40g/min Automatic anti-calc system Spray function Drop resistance 350ml water tank 360 degrees swivel 3m cord for freedom of movement when ironing 2400 Watts


PHILIPS WEBCAM



Phillips are another company getting behind the 2008 VoIP trend with the launch of a range of attractive looking webcams and VoIP phones.

VoIP isn’t new but it has certainly gained more acceptance in recent years as a genuine business instrument, rather than a home application that helped people keep in touch, where the cost and novelty made up for the poor quality of the image and the restriction of the typical headset

PHILIPS LCD

NEC unveils another eco-friendly monitor that carries and ErgoDesign adjustable stand that should come in handy for people looking for eco-friendly visual solutions available in the market today. It carries an ECO Mode feature that means that power consumption is reduced.

The Intelligent Power Management and off timer features help conserve energy and reduce carbon dioxide emissions by switching to a low-power state or automatically powering down when the monitor is on, but not in use. The combination of these green technologies extends the life of the MultiSync E222W and raises the standard for green LCD displays.

Features:

1680 x 1050 native resolution in 16:10 aspect ratio
250 cd/m² brightness
Rapid Response time of 5ms
4-way ergonomic stand with 110mm height-adjust, tilt, swivel and pivot
ECO Mode and carbon footprint meter
Energy Star 5.0 and EPEAT Silver compliant
Intelligent Power Management (IPM) system and off timer
50% less power consumption and mercury content
5-setting Dynamic Video Mode (standard, text, movie, game, photo)
Multi-directional OSD NaViKey
HDCP and Windows Vista Premium-certified
NaViSet Administrator software for centralized control
Recycled packaging materials
The NEC E222W monitor has an MSRP of $269 and will become available this July.

PHILIPS TRIMMER/SHAVING MACHINE

Costco is clearing out this auto cleaning shaver for just under $50, INSTORE ONLY. Great deal that has been going on for some time and is already sold out at some places.
In BC, Bby and Richmond costco (and probably others too) still seem to have a lot left. But note that there are a lot of ppl at Costco today so it might sell out quick by tomorrow.

26) PHOTONIC COMPUTING

Today's computers use the movement of electrons in-and-out of transistors to do logic. Photonic computing is intended to use photons or light particles, produced by lasers, in place of electrons. Compared to electrons, photons are much faster – light travels about 30 cm, or one foot, in a nanosecond – and have a higher bandwidth.

Details
Computers work with binary, on or off, states. A completely optical computer requires that one light beam can turn another on and off. This was first achieved with the photonic transistor, invented in 1989 at the Rocky Mountain Research Center. This demonstration eventually created a growing interest in making photonic logic componentry utilizing light interference.

Light interference is very frequency sensitive. This means that a narrow band of photon frequencies can be used to represent one bit in a binary number. Many of today's electronic computers use 64 or 128 bit-position logic. The visible light spectrum alone could enable 123 billion bit positions.

Recent research shows promise in temporarily trapping light in crystals. Trapping light is seen as a necessary element in replacing electron storage for computer logic.

While photonic computing is still seen as impractical by many[who?], research is being pushed along by strong market forces already implementing networking and, thus, creating opportunities. Recent years have seen the development of new conducting polymers which create transistor-like switches that are smaller, and 1,000 times faster, than silicon transistors.

Optical switches switch optical wavelengths. Optical switching, while not all-optical, has already become important in networking environments. 100 terabit-per-second data-handling is expected within the decade. Existing technologies include:

micro-electro-mechanical systems, or MEMS, which use tiny mechanical parts such as mirrors.
Thermo-optics technology, derived from ink-jet technology, creates bubbles to deflect light.
liquid crystal display switching changes (e.g., by filtering and rotating) the polarization states of the light.
acousto-optic modulator uses the acousto-optic effect to diffract and shift the frequency of light using sound waves (usually at radio-frequency).
photonic integrated circuits.

Optical computers
An optical computer (also called a photonic computer) is a device that uses the photons in visible light or infrared (IR) beams, rather than electric current, to perform digital computations. An electric current creates heat in computer systems, the more processing speed is needed, the more electricity is required; all this extra heat is extremely damaging to the hardware. Light however doesn't create significant amounts of heat no matter how much is used and therefore more powerful processing systems can be produced. By applying some of the advantages of visible and/or IR networks at the device and component scale, a computer might someday be developed that can perform operations 10 or more times faster than a conventional electronic computer.

Visible-light and IR beams, unlike electric currents, pass through each other without interacting. Several (or many) laser beams can be shone so their paths intersect, but there is no interference among the beams, even when they are confined essentially to two dimensions. Electric currents must be guided around each other, and this makes three-dimensional wiring necessary. Thus, an optical computer, besides being much faster than an electronic one, might also be smaller.

Some engineers think optical computing will someday be common, but most agree that transitions will occur in specialized areas one at a time. Some optical integrated circuits have been designed and manufactured. (At least one complete, although rather large, computer has been built using optical circuits.) Three-dimensional, full-motion video can be transmitted along a bundle of fibers by breaking the image into voxels. Some optical devices can be controlled by electronic currents, even though the impulses carrying the data are visible light or IR.

Optical technology has made its most significant inroads in digital communications, where fiber optic data transmission has become commonplace. The ultimate goal is the so-called photonic network , which uses visible and IR energy exclusively between each source and destination. Optical technology is employed in CD-ROM drives and their relatives, laser printers, and most photocopiers and scanners. However, none of these devices are fully optical; all rely to some extent on conventional electronic circuits and components.

Most research projects focus on replacing current computer components with optical equivalents, resulting in an optical digital computer system processing binary data. This approach appears to offer the best short-term prospects for commercial optical computing, since optical components could be integrated into traditional computers to produce an optical/electronic hybrid. Other research projects take a non-traditional approach, attempting to develop entirely new methods of computing that are not physically possible with electronics.

Optical components for binary digital computer
The fundamental building block of modern electronic computers is the transistor. To replace electronic components with optical ones, an equivalent "optical transistor" is required. This is achieved using materials with a non-linear refractive index. In particular, materials exist where the intensity of incoming light affects the intensity of the light transmitted through the material in a similar manner to the voltage response of an electronic transistor. This "optical transistor" effect is used to create logic gates, which in turn are assembled into the higher level components of the computer's CPU.

Misconceptions, challenges and prospects
Another claimed advantage of optics is that it can reduce power consumption, but an optical communication system will typically use more power over short distances than an electronic one. This is because the shot noise of an optical communication channel is greater than the thermal noise of an electrical channel which, from information theory, means that we require more signal power to achieve the same data capacity. However, over longer distances and at greater data rates the loss in electrical lines is sufficiently large that optical communications will comparatively use a lower amount of power. As communication data rates rise, this distance becomes shorter and so the prospect of using optics in computing systems becomes more practical.

A significant challenge to optical computing is that computation is a nonlinear process in which multiple signals must interact to compute the answer. Light, which is an electromagnetic wave, can only interact with another electromagnetic wave in the presence of electrons in a material and the strength of this interaction is much weaker for electromagnetic wave light than for the electronic signals in a conventional computer. This results in the processing elements for an optical computer requiring high powers and larger dimensions than for a conventional electronic computer using transistors.


Photonic logic
Photonic logic is the use of photons (light) in logic gates (AND, NAND, OR, NOR, XOR, XNOR). Photonic logic refers to the usage of light (photons) to form logic gates. Switching is obtained using nonlinear optical effects when two or more signals are combined.

Resonators are especially useful in photonic logic, since they allow a build-up of energy from constructive interference, thus enhancing optical nonlinear effects.

Other approaches currently being investigated include photonic logic at a molecular level, using photoluminescent chemicals.

Photonics
The science of photonics includes the generation, emission, transmission, modulation, signal processing, switching, amplification, detection and sensing of light. The term photonics thereby emphasizes that photons are neither particles nor waves - they are different in that they have both particle and wave nature. It basically covers all technical applications of light over the whole spectrum from ultraviolet over the visible to the near, mid and far infrared. Most applications, however, are in the range of the visible and near infrared light. The term Photonics developed as an outgrowth of the first practical semiconductor light emitters invented in the early 1960s and optical fibers developed in the 1970s.

Refraction of waves of photons (light) by a prism

25) PC HARDWARE

A personal computer is made up of multiple physical components of computer hardware, upon which can be installed an operating system and a multitude of software to perform the operator's desired functions.

Typical PC hardware
Though a PC comes in many different form factors, a typical personal computer consists of a case or chassis in a tower shape (desktop) and the following parts:


Motherboard
The motherboard is the "body" of the computer. Components directly attached to the motherboard include:



The central processing unit (CPU) performs most of the calculations which enable a computer to function, and is sometimes referred to as the "brain" of the computer. It is usually cooled by a heat sink and fan.

The chipset mediates communication between the CPU and the other components of the system, including main memory.

RAM Stores all running processes (applications) and the current running OS. RAM Stands for Random Access Memory

The BIOS includes boot firmware and power management. The Basic Input Output System tasks are handled by operating system drivers.

Internal Buses connect the CPU to various internal components and to expansion cards for graphics and sound.

Current

The northbridge memory controller, for RAM and PCI Express
PCI Express, for graphics cards
PCI, for other expansion cards
SATA, for disk drives


Obsolete
ATA (superseded by SATA)
AGP (superseded by PCI Express)
VLB VESA Local Bus (superseded by AGP)
ISA (expansion card slot format obsolete in PCs, but still used in industrial computers)


External Bus Controllers support ports for external peripherals. These ports may be controlled directly by the southbridge I/O controller or based on expansion cards attached to the motherboard through the PCI bus.
USB
FireWire
eSATA


Power supply
Includes power cord, switch, and cooling fan. Supplies power at appropriate voltages to the motherboard and internal disk drives. It also converts alternating current to direct current and provides different voltages to different parts of the computer.

Video display controller
Produces the output for the visual display unit. This will either be built into the motherboard or attached in its own separate slot (PCI, PCI-E, PCI-E 2.0, or AGP), in the form of a graphics card.

Removable media devices
CD (compact disc) - the most common type of removable media, suitable for music and data.

CD-ROM Drive - a device used for reading data from a CD.

CD Writer - a device used for both reading and writing da
ta to and from a CD.

DVD (digital versatile disc) - a popular type of removable media that is the same dimensions as a CD but stores up to 12 times as much information. It is the most common way of transferring digital video, and is popular for data storage.
DVD-ROM Drive - a device used for reading data from a DVD.

DVD Writer - a device used for both reading and writing data to and from a DVD.

DVD-RAM Drive - a device used for rapid writing and reading of data from a special type of DVD.

Blu-ray Disc - a high-density optical disc format for data and high-definition video. Can store 70 times as much information as a CD.

BD-ROM Drive - a device used for reading data from a Blu-ray disc.

BD Writer - a device used for both reading and writing data to and from a Blu-ray disc.

HD DVD - a discontinued competitor to the Blu-ray format.

Floppy disk - an outdated storage device consisting of a thin disk of a flexible magnetic storage medium. Used today mainly for loading RAID drivers.

Zip drive - an outdated medium-capacity removable disk storage system, first introduced by Iomega in 1994.

USB flash drive - a flash memory data storage device integrated with a USB interface, typically small, lightweight, removable, and rewritable. Capacities vary, from hundreds of megabytes (in the same ballpark as CDs) to tens of gigabytes (surpassing, at great expense, Blu-ray discs).

Tape drive - a device that reads and writes data on a magnetic tape, used for long term storage and backups.

Internal storage
Hardware that keeps data inside the computer for later use and remains persistent even when the computer has no power.

Hard disk - for medium-term storage of data.

Solid-state drive - a device similar to hard disk, but containing no moving parts and stores data in a digital format.

RAID array controller - a device to manage several internal or external hard disks and optionally some peripherals in order to achieve performance or reliability improvement in what is called a RAID array.

Sound card
Enables the computer to output sound to audio devices, as well as accept input from a microphone. Most modern computers have sound cards built-in to the motherboard, though it is common for a user to install a separate sound card as an upgrade. Most sound cards, either built-in or added, have surround sound capabilities.

Other peripherals
In addition, hardware devices can include external components of a computer system. The following are either standard or very common.Includes various input and output devices, usually external to the computer system.


Input

Text input devices
Keyboard - a device to input text and characters by depressing buttons (referred to as keys), similar to a typewriter. The most common English-language key layout is the QWERTY layout.


Pointing devices
Mouse - a pointing device that detects two dimensional motion relative to its supporting surface.

Optical Mouse - a newer technology that uses lasers, or more commonly LEDs to track the surface under the mouse to determine motion of the mouse, to be translated into mouse movements on the screen.

Trackball - a pointing device consisting of an exposed protruding ball housed in a socket that detects rotation about two axes.

Gaming devices
Joystick - a general control device that consists of a handheld stick that pivots around one end, to detect angles in two or three dimensions.

Gamepad - a general handheld game controller that relies on the digits (especially thumbs) to provide input.

Game controller - a specific type of controller specialized for certain gaming purposes.

Image, Video input devices
Image scanner - a device that provides input by analyzing images, printed text, handwriting, or an object.

Webcam - a low resolution video camera used to provide visual input that can be easily transferred over the internet.

Audio input devices
Microphone - an acoustic sensor that provides input by converting sound into electrical signals.

Mic - converting an audio signal into electrical signal.

Output

Image, Video output devices
Printer
Monitor


Audio output devices
Speakers
Headset

24) COMPUTER ARCHITECTURE

Computer architecture in computer engineering is the conceptual design and fundamental operational structure of a computer system. It is a blueprint and functional description of requirements and design implementations for the various parts of a computer, focusing largely on the way by which the central processing unit (CPU) performs internally and accesses addresses in memory.

It may also be defined as the science and art of selecting and interconnecting hardware components to create computers that meet functional, performance and cost goals.

Overview
Computer architecture comprises at least three main subcategories:

Instruction set architecture, or ISA, is the abstract image of a computing system that is seen by a machine language (or assembly language) programmer, including the instruction set, word size, memory address modes, processor registers, and address and data formats.
Microarchitecture, also known as Computer organization is a lower level, more concrete and detailed, description of the system that involves how the constituent parts of the system are interconnected and how they interoperate in order to implement the ISA. The size of a computer's cache for instance, is an organizational issue that generally has nothing to do with the ISA.
System Design which includes all of the other hardware components within a computing system such as:

1.system interconnects such as computer buses and switches
2.memory controllers and hierarchies
3.CPU off-load mechanisms such as direct memory access
4.issues like multi-processing

Once both ISA and microarchitecture have been specified, the actual device needs to be designed into hardware. This design process is called implementation. Implementation is usually not considered architectural definition, but rather hardware design engineering.

Implementation can be further broken down into three (not fully distinct) pieces:

Logic Implementation - design of blocks defined in the microarchitecture at (primarily) the register-transfer and gate levels.
Circuit Implementation - transistor-level design of basic elements (gates, multiplexers, latches etc) as well as of some larger blocks (ALUs, caches etc) that may be implemented at this level, or even (partly) at the physical level, for performance reasons.
Physical Implementation - physical circuits are drawn out, the different circuit components are placed in a chip floor-plan or on a board and the wires connecting them are routed.
For CPUs, the entire implementation process is often called CPU design.

More specific usages of the term include more general wider-scale hardware architectures, such as cluster computing and Non-Uniform Memory Access (NUMA) architectures.

History
The term “architecture” in computer literature can be traced to the work of Lyle R. Johnson and Frederick P. Brooks, Jr., members in 1959 of the Machine Organization department in IBM’s main research center. Johnson had occasion to write a proprietary research communication about Stretch, an IBM-developed supercomputer for Los Alamos Scientific Laboratory; in attempting to characterize his chosen level of detail for discussing the luxuriously embellished computer, he noted that his description of formats, instruction types, hardware parameters, and speed enhancements aimed at the level of “system architecture” – a term that seemed more useful than “machine organization.” Subsequently Brooks, one of the Stretch designers, started Chapter 2 of a book (Planning a Computer System: Project Stretch, ed. W. Buchholz, 1962) by writing, “Computer architecture, like other architecture, is the art of determining the needs of the user of a structure and then designing to meet those needs as effectively as possible within economic and technological constraints.” Brooks went on to play a major role in the development of the IBM System/360 line of computers, where “architecture” gained currency as a noun with the definition “what the user needs to know.” Later the computer world would employ the term in many less-explicit ways.

The first mention of the term architecture in the referred computer literature is in a 1964 article describing the IBM System/360. The article defines architecture as the set of “attributes of a system as seen by the programmer, i.e., the conceptual structure and functional behavior, as distinct from the organization of the data flow and controls, the logical design, and the physical implementation.” In the definition, the programmer perspective of the computer’s functional behavior is key. The conceptual structure part of an architecture description makes the functional behavior comprehensible, and extrapolatable to a range of Use cases. Only later on did ‘internals’ such as “the way by which the CPU performs internally and accesses addresses in memory,” mentioned above, slip into the definition of computer architecture.

Sub-definitions
Some practitioners of computer architecture at companies such as Intel and AMD use more fine distinctions:

Macroarchitecture - architectural layers that are more abstract than microarchitecture, e.g. ISA
ISA (Instruction Set Architecture) - as defined above
Assembly ISA - a smart assembler may convert an abstract assembly language common to a group of machines into slightly different machine language for different implementations
Programmer Visible Macroarchitecture - higher level language tools such as compilers may define a consistent interface or contract to programmers using them, abstracting differences between underlying ISA, UISA, and microarchitectures. E.g. the C, C++, or Java standards define different Programmer Visible Macroarchitecture - although in practice the C microarchitecture for a particular computer includes
UISA (Microcode Instruction Set Architecture) - a family of machines with different hardware level microarchitectures may share a common microcode architecture, and hence a UISA.
Pin Architecture - the set of functions that a microprocessor is expected to provide, from the point of view of a hardware platform. E.g. the x86 A20M, FERR/IGNNE or FLUSH pins, and the messages that the processor is expected to emit after completing a cache invalidation so that external caches can be invalidated. Pin architecture functions are more flexible than ISA functions - external hardware can adapt to changing encodings, or changing from a pin to a message - but the functions are expected to be provided in successive implementations even if the manner of encoding them changes.

Design goals
The exact form of a computer system depends on the constraints and goals for which it was optimized. Computer architectures usually trade off standards, cost, memory capacity, latency and throughput. Sometimes other considerations, such as features, size, weight, reliability, expandability and power consumption are factors as well.

The most common scheme carefully chooses the bottleneck that most reduces the computer's speed. Ideally, the cost is allocated proportionally to assure that the data rate is nearly the same for all parts of the computer, with the most costly part being the slowest. This is how skillful commercial integrators optimize personal computers.

Performance
Computer performance is often described in terms of clock speed (usually in MHz or GHz). This refers to the cycles per second of the main clock of the CPU. However, this metric is somewhat misleading, as a machine with a higher clock rate may not necessarily have higher performance. As a result manufacturers have moved away from clock speed as a measure of performance.

Computer performance can also be measured with the amount of cache a processor has. If the speed, MHz or GHz, were to be a car then the cache is like a traffic light. No matter how fast the car goes, it still will be stopped by a red traffic light. The higher the speed, and the greater the cache, the faster a processor runs.

Modern CPUs can execute multiple instructions per clock cycle, which dramatically speeds up a program. Other factors influence speed, such as the mix of functional units, bus speeds, available memory, and the type and order of instructions in the programs being run.

There are two main types of speed, latency and throughput. Latency is the time between the start of a process and its completion. Throughput is the amount of work done per unit time. Interrupt latency is the guaranteed maximum response time of the system to an electronic event (e.g. when the disk drive finishes moving some data). Performance is affected by a very wide range of design choices — for example, pipelining a processor usually makes latency worse (slower) but makes throughput better. Computers that control machinery usually need low interrupt latencies. These computers operate in a real-time environment and fail if an operation is not completed in a specified amount of time. For example, computer-controlled anti-lock brakes must begin braking almost immediately after they have been instructed to brake.

The performance of a computer can be measured using other metrics, depending upon its application domain. A system may be CPU bound (as in numerical calculation), I/O bound (as in a webserving application) or memory bound (as in video editing). Power consumption has become important in servers and portable devices like laptops.

Benchmarking tries to take all these factors into account by measuring the time a computer takes to run through a series of test programs. Although benchmarking shows strengths, it may not help one to choose a computer. Often the measured machines split on different measures. For example, one system might handle scientific applications quickly, while another might play popular video games more smoothly. Furthermore, designers have been known to add special features to their products, whether in hardware or software, which permit a specific benchmark to execute quickly but which do not offer similar advantages to other, more general tasks.

Power consumption
Power consumption is another design criterion that factors in the design of modern computers. Power efficiency can often be traded for performance or cost benefits. With the increasing power density of modern circuits as the number of transistors per chip scales (Moore's Law), power efficiency has increased in importance. Recent processor designs such as the Intel Core 2 put more emphasis on increasing power efficiency. Also, in the world of embedded computing, power efficiency has long been and remains the primary design goal next to performance.