how remote control works?

Answer 1

Remote controls work using Infra Red technology.The basic premise at work in an IR remote control is the use of light to carry signals between a remote control and the device it's directing. Infrared light is in the invisible portion of the electromagnetic spectrum.




An IR remote control (the transmitter) sends out pulses of infrared light that represent specific binary codes. These binary codes correspond to commands, such as Power On/Off and Volume Up. The IR receiver in the TV, stereo or other device decodes the pulses of light into the binary data (ones and zeroes) that the device's microprocessor can understand. The microprocessor then carries out the corresponding command.

To get a better idea of how the process works, let's take a look inside a typical remote control -- the universal remote that came with the author's digital cable box.

There is a good,detailed and a pictoral representation given in this site
http://electronics.howstuffworks.com/remote-control1.htm
Check it
Hope this helps
Good luck.

Answer 2

The idea of remote control technology is very old. It was first implemented in World War I. They usually use Infra Red waves. The remote control device has a Transmitter which sends short IR bursts which acts like binary codes. These binary codes acts like command given to TV. The TV has a receiver which converts the IR wave into binary code.

Answer 3

A remote control has a ifrared lights (which are invisible to the human eye) that, when different buttons are pushed, send out a different pattern or wavelength to the receiver. The receiver understands the command the remote is sending and reacts accordingly.

Answer 4

Mostly with 2 AA batteries