TV Remote Control Components

TV Remote Control Components

C027/5739 Rights Managed

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Credit: SHEILA TERRY/SCIENCE PHOTO LIBRARY

Caption: TV remote control keypad and the internal electronic circuitry showing both sides of the printed circuit board. When a button on the keypad is pressed its conductive base connects with the corresponding contact point on the printed circuit board, completing a circuit to the microcontroller which creates a coded command signal. This is transmitted as infra-red light by the I-R light emitting diode (LED) at the top of the control to the sensor on the TV receiver or set-top box where it is decoded. The reverse side of the PCB shows the micro-controller near the centre, the infra-red LED at the top and at the other end location points for 2 x 1.5v AAA batteries.

Release details: Model release not required. Property release not required.

Keywords: 8-bit, aaa, batteries, computer, contact point, i-r, infra-red, keypad, led, light emitting diode, low-voltage, microcontroller, microprocessor, pcb, printed circuit board, receiver, remote control, risc, sensor, set-top box, signal, tv

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