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The System Unit

A system unit is the part of A computer that houses the primary devices.that perform operations and produce results for complex calculations.It includes the motherboard, CPU, RAM, Chip, Fan, Sound Card, Hard Drive and other components etc.

Fig.:- The System Unit

1) Power Supply

The power supply converts electricity into the current works for the computer.When the computer is turned on the power supply allows converted electricity to travel to other components inside the computer.

2) Motherboard:

The motherboard is the circuit board that holds the main internal components of the computer together.On the motherboard there are three major cards; sound card that operates the sound, the video card that handles the graphics

3) RAM & ROM:

RAM stands for Random Access Memorywhere Ram Holds the information you are working with while the computer is turned on.

ROM stands for Read Only Memory where ROM holds information that you can only read, but not erase.

4) Fan:

A computer fan is attached to a compute is used for active cooling.

5) Video Card:

The video card allows the computer to send graphical information to a video display device such as a monitor, TV, or projector.video card include graphics card, graphics adapter, display adapter, video adapter, video controller etc.

6) Sound Card:

A Sound Card is an Input/Output device component inside the computer specifically for audio.

7) CD /DVD Drive:

CD Stand for Compact Disk. It is sping of audio music System. if your computer has sound card and speakers, you can play audio CD with your computer.

DVD Stand for Digital Video Disk. it is simpilar to CD but where DVD has large space to store movie and support multi-lingual subtitles...

8) Ribbon:

Ribbon is a Graphical Control Element user interface design. where wire ribbon connects the floppy drive to the motherboard.

9) Hard Disk:

Hard Disk is the hardware component that stores all types of digital content linke Your documents, pictures, music, videos, programs, application preferences, and operating system etc.

When you save data or install programs on your computer information is written to your hard disk.

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