FUNCTIONS OF THE MAIN COMPONENTS OF A SYSTEM UNIT

SYSTEM UNIT
1.Box-like case that contains computer’s electronic components
2.Sometimes called the chassis




INPUT OUTPUT PORT


FRONT VIEW OF SYSTEN UNIT


INSIDE VIEW OF SYSTEM UNIT





Functions of the main components of a system unit

1.Input/Output port(I/O port):
A port is the point at which a peripheral attaches to a system unit
so that the peripheral can send data to or receive information from
the computer.

2.Power button:
To start on computer

3.Motherboard:
Main circuit board of the system unit, which has some electronic components
attached to it and others built into it.

4.Power Supply:
Convert standard electrical power into the form that computer can
use. If a power supply is not providing the necessary power, the
computer will not function properly.

5.DVD-ROM drive:
A device that reads DVD-ROM, also can read audio CDs, CDROMSs,
CD-Rs and CD-RWs.

6.CD-ROM drive :
A device that reads audio CDs, CD-ROMs, CD-Rs and CD-RWs.

7.DVD/CD-RW drive
It is a combination drive that reads DVD and CD media, it also
writes to CD-RW media. This drive also allows watching a DVD or burn a CD.

8.Reset button:
Kick of soft boot, instructing the computer to go through the process of
shutting down, which would clear memory and reset devices to their initialized
state. It simply removes power immediately.

9.Zip drive
A high-capacity disk drive that reads from and writes on a Zip disk

10.Floppy drive
A device that reads from and writes on a floppy disk

11.Hard disk drive
Type of storage device that contains one or more inflexible, circular platters
that store data, instructions and information. Also called a hard disk.