For each of the following devices,describe the type of component it is and briefly describe its function within a computer system (a) laser printer (b) mouse (c) 8.1 GB hard drive (d) CPU (e) RAM (f) ROM

Answers (1)

Laser printer: A printer that uses a focused beam or light to transfer text and images onto paper. The laser beam paints the image of the printed page on the drum. Before the laser is fired, the entire surface of the photosensitive drum, as well as the paper, is given an electrical charge carried by a pair of fine wires.

Mouse: An input device that controls the movement of the pointer on the screen, allows us to select and click at various locations. Major components are the trackball and the optical sensor which inputs the directional movement to the pointer. 

8.1 GB Hard drive: Hard Disk drive which is used as an external device to store data, can be moved from one computer to another without any major changes. 

CPU: Central processing unit, which retrieves and executes instructions. It is also called the brain of the computer. 

RAM: Random access memory, It is a volatile memory of the computer that temporarily stores files while we user is working on it.

ROM: Read-only memory, Non Volatile memory, and permanently stores instructions for the computer.

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