Question

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Answer 1

Defination of REMOTE CONTROL-

A device used to control the operation of anapparatus or machine, as a television set, from a distance or we can say that a remote is a hand-held device that enables remote control of asystem or appliance. for ex, in daily life, a remote control can be used to operate devices such as a tv, cd player, or other home appliance, from a short distance. A remote control is important feature for the user, and can allow operation of devices that are out of convenient reach for direct operation of controls. In some cases, remote controls allow a person to operate a device that they otherwise would not be able to reach, as when a garage door opener is triggered from outside or when a Digital Light Processing projector that is mounted on a high ceiling is controlled by a person from the floor level.Early television used ultrasonic tones. Present-day remote controls are commonly consumer infrared devices because it send digitally-coded pulses of infrared radiation to control functions such as power, volume, tuning, temperature set point, fan speed, or other features.

If we talking about technology then,the main technology used in home remote controls is infrared (IR) light.The transmitter in the remote control handset sends out a stream of pulses of infrared light when the user presses a button on the handset.signal between a remote control handset and the device it controls consists of pulses of infrared light, which is invisible to the human eye, but can be seen through a digital camera, video camerahone camera A transmitter is often emitted the light emitting diode.

remote control play a measure role in embedded C.Looking around, we find ourselves to be surrounded by various types of embedded systems.for ex- televisions, CD players, air conditioners, fans … are remote comes.In the military also it played a measure role.With a remote control, it is compact to bring along with people. On the other hand, it is useful for the sick or disabled. It helps people move freely slide and interacts with the audience easily.