COMPUTER FUNDAMENTALS

Detailed explanation-1: -A light pen is a light-sensitive pointing input device commonly used to select or otherwise modify text or data on a screen. Used with a CRT monitor, these devices were an early form of manipulating and highlighting data on the screen.

Detailed explanation-2: -A light pen is a light-sensitive pointing input device used to select or to modify text or data on a screen. Light pens were developed around 1955.

Detailed explanation-3: -A light pen is a light-sensitive computer input device, basically a stylus, that is used to select text, draw pictures and interact with user interface elements on a computer screen or monitor.

Detailed explanation-4: -A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a computer’s cathode-ray tube (CRT) display.

Detailed explanation-5: -Light Pen (similar to the pen) is a pointing device which is used to select a displayed menu item or draw pictures on the monitor screen. It consists of a photocell and an optical system placed in a small tube.