What is a Light Pen?
A light pen is a computer input device. It works just like a mouse and It’s a pointing device that can help us to touch any icon on the screen and open it. It’s connected to the monitor. It has a tip with light which helps to detect the location of the pen on the screen. A light pen is used to draw lines or images on the screen and edit text. Light pens do not generate any light, instead, they contain photocells to detect the presence of light. When is detected from the screen enabling the computer to identify the location of the pen on the screen. It basically works as Enter and OK. As well as we can call it an electronic pen. It was invented by BEN GURLY in 1959 with the idea of a mouse.
Characteristics of the light pen:
- When drawing graphics, a light pen comes in very handy.
- Objects on the display screen are selected with a light pen.
What is a Light Pen?
A light pen is a type of pointing input device that detects light and is frequently used to select or alter text or data on a screen. These devices, when used with a CRT (cathode ray tube) monitor, were an early method of highlighting and modifying data on the screen.