Question

briefly describe about light pen ,scanner ,joystick and plotter

Answer 1

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Light pen :-

⇒ It is a pen shaped light sensitive device used to manipulate information on a computer screen by touching the screen directly .

⇒ It is quite like a mouse in its functionality .

Scanner :-

⇒A scanner is an input device that converts a document containing text or graphic image into a digitised phone that can be stored as an electronic image on a computer .

Joystick :-

⇒A joystick is an input device commonly used to control video games .

⇒Joystick consists of a base and a stick that can be moved in any direction .

Plotter :-

⇒A plotter is an output device that provides high-quality graphic or drawing using ink pen

Answer 2

Answer:

Explanation:

LIGHTPEN

A light pen is a computer input device, which is in the form of a light-sensitive wand used in conjunction with a computer's cathode-ray tube (CRT) display

SCANNER

Scanner, also known as an optical scanner. It is a light-sensing input device that reads printed text and graphics and then translates the results into a form the computer can process.

JOYSTICK

Joystick is a cursor control device used in computer games and assistive technology .

It often has one or more push-buttons, called switches, whose position can also be read by the compute.

PLOTTER

A plotter is a special output device used to produce hard copies of large graphs and designs on paper, such as construction maps, engineering drawings, architectural plans and business charts.

The plotter is either a peripheral component that you add to your computer system or a standalone device with its own internal processor.