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1. SYSTEM UNIT

2. System Unit
 Sebuah alat yang mengandungi komponen-
komponen elektronik komputer
 Juga dikenali sebagai chasis
contoh

3. KomponendidalamSystemunit

4. Bahagian Hadapan System Unit

5. Bahagian Belakang System Unit

6. 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.

7. Komponen dalaman Motherboard
Expension
slots

8. Central Processing Unit (CPU)

9. 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.

10. RAM & ROM

11. 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.

12. 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.

13. Expansion Slots

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

16. Latihan