SYSTEM UNIT

System Unit

Sebuah alat yang mengandungi komponen- komponen elektronik komputer

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Komponen di dalam System unit

Bahagian Hadapan System Unit

Bahagian Belakang System Unit

No.

Components Functions

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 is able to send data and receive information from the computer.

2. Power button To turn the computer on 3. Reset button Restating the computer, instructs the computer to go through the

process of shutting down, which would clear the memory and reset devices to their initialized state. It simply removes power immediately.

4. Motherboard Main circuit board of the system unit, it has some electronic components attached to it.

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

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

7. CD-ROM drive A device that reads audio CDs, CD-ROMs, CD-Rs and CD-RWs. 8. DVD/CD-RW drive A combination drive that reads DVD and CD media, and writes to

CD-RW media. 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 A Type of storage device that contains one or more inflexible,

circular platters that store data, instructions and information.

Komponen dalaman Motherboard

Expension slots

Central Processing Unit (CPU)

Central Processing Unit (CPU) A Central Processing Unit or CPU is a

microprocessor (or processor for short). It is an integrated circuit chip that is capable of processing electronic signals.

The CPU is the most important element in a computer system.

RAM & ROM

RAM

A computer uses RAM to hold temporary instructions and data needed to complete tasks.

This enables the computer's CPU (Central Processing Unit) to access instructions and data stored in the memory very quickly.

RAM stores data during and after processing.

ROM

ROM is another type of memory permanently stored inside the computer.

Programs in ROM have been pre-recorded. It can only be stored by the manufacturer; once it is done, it cannot be changed.

All the contents in ROM can be accessed and read but cannot be changed.

Expansion Slots

Expansion Slots

Expansion slots are the sockets where the circuit boards or the adapter cards can be inserted into the motherboard.

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