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The term is most commonly used to refer to a remote control (usually just called "the remote") for televisions or other consumer electronics such as stereo systems, DVD players, home cinema, computer towers and LCDs and to turn-on and off a plug or group of plugs. Remote controls for these devices are usually small rectangular objects with lots of buttons for adjusting various settings such as television channel, track number, and volumeVolume (also called capacity is a quantification of how much space an object occupies. The SI unit for volume is the cubic metre (American spelling meter). The volume of a solid object is a numerical value given to describe the three-dimensional concept o. In fact, for the majority of modern devices with this kind of control, the remote contains all the function controls while the controlled device itself only has a handful of essential primary controls. Most of these remotes communicate to their respective devices via infraredInfrared IR radiation is electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation. The name means "below red" (from the Latin infra "below"), red being the color of visible light of longest wavelength. signals and a few via radio signals. They are usually powered by small ( AA or AAAAAA battery" may also be an abbreviation for " antiaircraft artillery battery An AAA battery is 44. 5 mm long and 10. 5 mm in diameter, weighing around 11. Output of alkaline batteries in this size is 1. 5 volts, 900 to 1,155 mAh. The battery is also clas size) batteriesIn science and technology, a battery is a device that stores energy and makes it available in an electrical form. Although such storage in an electrostatic form is practical in some specialized uses, batteries usually consist of electrochemical devices su.
The first remote intended to control a television was developed by Zenith Electronics CorporationIs a famous manufacturer of televisions in the USA. Inventor of the modern remote control and introducer of the HDTV in North America. It has been bought by LG from Korea. History To be edited Famous Appliances To be added Links Consumer electronics Elect Radio in early 1950s. The remote--unofficially called "Lazy Bones"--used a wire to connect to the television set. To improve the cumbersome setup, a wireless remote control was created in 1955. The remote called "Flashmatic" worked by shining a beam of light onto a photoelectric cell. Unfortunately, the cells did not distinguish between light from the remote and light from other sources. The Flashmatic also required that the remote control be pointed accurately at the receiver.
In 19561956 is a leap year starting on Sunday. see link for calendar) Events January January 1 End of Anglo- Egyptian Condominium in Sudan. January 16 President Gamal Abdal Nasser of Egypt vows to reconquer Palestine January 26 1956 Winter Olympic Games open in Robert Adler developed "Zenith Space Command", the first modern wireless remote. It was mechanical and used ultrasound to change the channel and volume. When the user pushed a button on the remote control it clicked and struck a bar, hence the term "clicker". Each bar emitted a different frequency and circuits in the television detected this sound. The invention of the transistor made possible cheaper electronic remotes that contained a piezoelectricPiezoelectricity is the ability of certain crystals to produce a voltage when subjected to mechanical stress. The word is derived from the Greek piezein which means to squeeze or press. The effect is reversible; piezoelectric crystals, subject to an exter crystal that was fed by an oscillating electric current at a frequency near or above the upper limit of human hearing (but still audible by dogs). The receiver contained a microphone attached to a circuit that was tuned to the same frequency. Some drawbacks of the audio method was that the receiver could be easily triggered accidentally by naturally occurring noises, and some people (especially young women) could hear the piercing ultrasonic signals.
In the 1980s, when semiconductors for emitting and receiving infrared radiation were developed, remote controls gradually switched to that technology which, as of 2004, is still widely used. Remotes using radio technologies, such as Bose Audio Systems (which is not Bluetooth compliant) and Bluetooth, itself, also exist.
By the early 2000s, the number of consumer electronic devices in most homes greatly increased. According to the Consumer Electronics Association, an average American home has four remotes. To operate a home theater as many as five or six remotes may be required, including one for cable or satellite receiver, VCR or digital video recorder, DVD player, TV and audio amplifier. Several of these remotes may need to be used sequentally, but, as there are no accepted interface guidelines, the process is increasingly cumbersome. Many specialists, including Jakob Nielsen [1], a renowned usability specialist and Robert Adler , the inventor of the modern remote, note how confusing, unwieldy and frustrating the multiplying remotes have become. To that end, designers of the TiVo remote control replaced the standard columns of buttons on a black rectangle with a distinctive peanut shaped design that has been well received by its users [2]. This design, which has spawned several imitations, is likely to change the way consumer electronics designers approach the remote.
Alternatively, universal remote controls combine multiple remotes into one, usually with some sort of switch or button indicating which device the remote is currently controlling. Universal remotes run from inexpensive basic models to a US$700 Linux-powered model from Sony [3].
Remote controls exist for many other devices as well: model airplanes, helicopters and other remote control vehicles are popular childrens' toys; many robots are remotely controlled, especially those which are designed for doing perilous tasks; and some state of the art military fighter jets are operated by remote control.
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