Editing Radio-controlled model (section)

== Design ==
RC electronics have three essential elements. The [[radiocontrol model transmitter|transmitter]] is the controller. Transmitters have control sticks, triggers, switches, and dials at the user's finger tips. The [[receiver (radio)|receiver]] is mounted in the model. It receives and processes the signal from the transmitter, translating it into signals that are sent to the servos and [[Electronic speed control|speed controllers]]. The number of servos in a model determines the number of [[Communication channel|channels]] the radio must provide.

Typically the transmitter [[Multiplexer|multiplexes]] and modulates the signal into [[pulse-position modulation]]. The receiver demodulates and demultiplexes the signal and translates it into the special kind of [[pulse-width modulation]] used by standard [[servomechanism#RC servos|RC servos]] and controllers.

In the 1980s, a Japanese electronics company, [[Futaba RC|Futaba]], copied wheeled steering for RC cars. It was originally developed by Orbit for a transmitter specially designed for Associated cars It has been widely accepted along with a [[wikt:trigger|trigger]] control for [[throttle]]. Often configured for right hand users, the transmitter looks like a pistol with a wheel attached on its right side. Pulling the trigger would accelerate the car forward, while pushing it would either stop the car or cause it to go into reverse. Some models are available in left-handed versions.