Hardware - Peripherals
A Light Pen is a pointing device shaped like a pen and is connected to a VDU.
The tip of the light pen contains a light-sensitive element which, when placed against the screen, detects the light from the screen enabling the computer to identify the location of the pen on the screen.
A light pen
Light pens have the
advantage of 'drawing' directly onto the screen, but this
can become uncomfortable, and they are not as accurate as