The Computer System Components

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3. It is the case that holds the
motherboard, CPU, power supply, hard
drive, memory, disk drives and
expansion cards that are plugged into
the motherboard.

4. A collection of components designed to process and
store data. It comprises at least one input device,
a processing unit, an output device, and a storage
device, and may contain a communications device.

5. It is the main circuit board with electronic circuitry
to which all the other PC components are plugged or
connected, serving as centralised control and as a
hub for the flow of information.

6. It also called the PROCESSOR or
popularly known as CPU (Central
Processing Unit). It is the brain or
intelligence of a Computer System.

9. Written programs, commands or
instructions that tells the computer to
do things.
System SoftwareSystem Software
Application SoftwareApplication Software

10. System SoftwareSystem Software
programs designed to operate the
computer hardware and to provide and
maintain a platform for running
application software.

11. Application SoftwareApplication Software
programs designed for a specific purpose
like word processor, spreadsheet, media
players and database applications.

12. Physical component of the computer
system. These are the tangible parts or
the parts that can be touched.
InputInput
ProcessingProcessing
OutputOutput
StorageStorage
CommunicationCommunication

13. Process data to form an information
InputInput
Provides data to the computer.
ProcessingProcessing
Presents data/info acceptable to
the user.
OutputOutput

14. Preserves data/info for retrieval.
StorageStorage
Transmit data/info to other
computers globally.
CommunicationCommunication

15. KeyboardKeyboard
Used to type in information to
a computer system.

16. MouseMouse
Used to control an on-screen
pointer.

17. JoystickJoystick
Used mostly for
playing games.
The stem can be
moved omni-
directionally to
control the
movement of an
object on the
screen.

18. TrackballTrackball
A mouse on its back it consists
of a ball resting on two rollers at
right angles to each other, which
translate the ball's motion into
vertical
and horizontal
movement on the
screen.

19. Graphics TabletGraphics Tablet
A flat plastic rectangle with
subsurface electronics, used in
conjunction with pointing devices,
PUCK,a mouse-like device
with buttons for selecting
items or choosing
commands and
STYLUS, a pen for
drawing or
pointing.

20. Drum ScannerDrum Scanner
A high-quality image-capture device. The
image to be captured is wrapped around a
drum that spins very fast while a light source
scans across it to capture a digital version of
the image.

21. Flatbed ScannerFlatbed Scanner
This scanner type has a flat plane of
glass where the item being scanned
is placed. The scanning head moves
along a track on the underside
of the glass to
capture an image
of the item on
the glass.

22. Sheet­fed ScannerSheet­fed Scanner
A scanner that allows
only paper to be
scanned rather than
books or other thick
objects. It moves the
paper across a
stationary scan head.

23. Handheld ScannerHandheld Scanner
A scanner with
a handle and
typically a
trigger button
for switching on
the light source.

24. MicrophoneMicrophone
Allows the computer to
receive and record
sound. Necessary for
voice recognition
software and any
software that need to
record sound.

25. Digital CameraDigital Camera
Takes pictures without film and
stores your snapshots as digital files
in its memory or on a disk.

26. WebCamWebCam
Takes pictures
without film and
stores your
snapshots as
digital files in its
memory or on a
disk.

27. ProcessorProcessor
The “brain” or
intelligence of a
Computer System.
It performs the
systems
calculating and
processing.

28. MonitorMonitor
Displays characters and graphics on
a television-like screen.
CRT Monitor LCD Monitor
TOUCH-SCREEN
Monitor

29. PrinterPrinter
a peripheral which produces a hard
copy (permanent readable text
and/or graphics) of documents.
DOT-MATRIX
INKJET
LASERJET
PLOTTER

30. SpeakerSpeaker
A device that converts analog audio
signals into the equivalent air
vibrations in order to make
audible sound.

31. Digital ProjectorDigital Projector
A device that connects to a
computer via cabling to
enable the computer monitor
display to be
enlarged and
projected
onto a
screen.

32. Hard DiskHard Disk
Located within the system unit but
are external to the main circuit
board. These devices store data as
charges
on a magnetically
sensitive medium
or on a disk
coated with a
fine layer of
metallic particles.

33. Flash DiskFlash Disk
consists of flash memory data storage
device integrated with a USB (Universal
Serial Bus) 1.1 or 2.0 interface. USB flash
drives are typically removable and
rewritable most weigh less than 30 g (1
oz)

34. CD/DVDCD/DVD
Uses optical laser technology to
store data into the disk.

35. Network HUBNetwork HUB
is a device that connects multiple
computers into a network.

36. ModemModem
A digital-to-analogue device that
links computers to the telephone
network. A modem enables digital
data to be modulated so that it is
compatible with the
analogue signals
carried by the
telephone
system.

37. RouterRouter
An electronic device that is used
to forward data between
computer
networks.

38. Network CableNetwork Cable
are used to connect one network device to
other or to connect two or more computers
to share printer, scanner etc. Different types
of network cables like Coaxial cable, Optical
fiber cable, Twisted pair cables
are used depending
on the network's
topology,
protocol and size.

39. NIC/Lan CardNIC/Lan Card
is a computer system hardware
component designed to allow
computers to communicate over a
computer network.