system unit parts and funstions

1. 1 MOTHERBOARD
MOTHERBOARD is
also called the "System
Board," it is the main
printed circuit board in
an electronic device,
which contains sockets
or slots that accept
additional boards.

2. 2 POWER SUPPLY UNIT
POWER SUPPLY UNIT is also
called as power supply or PSU.
This is the device that supplies
power to your personal
computer. The power supply
then pulls the required amount
of electricity and converts the
AC current to DC current and it
also regulates the voltage to
eliminate spikes and surges
common in most electrical
systems.

3. 3 HARD DISK DRIVE-IDE TYPE
Hard Disk Drive (HDD) is also
known as hard drive. This is
the computer's main storage
device used to store all data on
the computer permanently.
Commonly, hard drives are
permanently place in an
internal drive bay at the front
of the system case and are
connected with either ATA,
SCSI, or a SATA cable and
power cable.

4. 4 OPTICAL DISC DRIVE
The Optical Disc Drive is
used to read or write
data on a disc.

5. 5 Random Access Memory (DIMM
Dual Inline Memory Module)
The personal computer
memory module also
known as Random
Access Memory (RAM) is
a piece of hardware that
allows stored data to be
accessed randomly. Its
main function is to store
the data temporarily.

6. 6 PROCESSOR -CPU
The CPU, or the Central
Processing Unit, is the brain of
the computer and one of the
most important chip in the
computer. New CPUs are
small and square and contain
multiple metallic connectors
or pins on the underside. The
CPU is inserted directly into a
CPU socket, pin side down, on
the motherboard.

7. 7 CPU FAN AND HEATSINK
CPU Fan and Heatsink
helps in reducing the
heat from the processor
so it will not shutdown
automatically.

8. 8 EIDE DATA CABLE
The EIDE (Enhanced Integrated
Drive Electronics data cable is
used to connect EIDE type
Hard Disk Drive to the
motherboard.

9. 9 SATA DATA CABLE
The S-ATA data cable is
used to connect S-ATA
type Hard Disk Drive to
motherboard.

10. 10 VIDEO CARD ADAPTER
VIDEO CARD is commonly
known as graphics
accelerator card, display
adapter, or graphics card.
This is a hardware
component whose main
function is to generate and
display the output images
to a computer monitor.

11. 11 NETWORK INTERFACE CARD (LAN CARD)
Network Interface Card
(NIC) is used to connect
computers to a computer
network.

12. 12 SOUND CARD ADAPTER
SOUND CARD is also called
as audio card adapter. This
is a computer expansion
card used for the input
and output of audio
signals from a computer
using a specific computer
programs. New
motherboard comes with
built in audio adapter