Next Saturday 20/3/2010
Quiz 1
1
CHAPTER 3
An Overview of the
Personal Computer
2
Chapter Overview



The Three Stages of Computing
Components of a Computer
Support Hardware
3
The Three Stages of Computing
4
Input
Any data or instructions used by a computer
Input devices( are hardware use to translate word, sound, images, and actions that
people understand into a form that the system unit can process
CD-ROM:
compact disc – read 0nly memory
5
 Processing : The central processing unit (CPU) is the heart and brain of
the computer. This chip is responsible for all primary number crunching
and data management.
- The CPU requires several other components that support it with the
management of data to operate.
Motherboard: The large circuit board
found inside the computer.
Chip set: A group of computer
integrated circuits that control the flow
of data thought the system.
6
ASUS manufactures motherboards based upon NVIDIA chipsets among other
chipsets. One of the most popular ASUS motherboards over the last year has been
the M2N32-SLI Deluxe motherboard. ASUS has recently updated the motherboard
to better serve the Vista customers in the form of the ASUS M2N32-SLI which is
on the test bench today.
7
Cont.
Data bus: A group of parallel conductors
found on the MB and
used by the CPU to send and
receive data from all the devices
in the computer.
Address bus: used by the CPU to address
memory locations.
Control bus:
This manages the information flow between
components indicating whether the operation is a read or a
write
8
Cont.
 Expansion slots: specialized sockets that allow additional
devices called expansion cards to be attached to the MB.


Clock: establish the maximum speed at which the processor can
execute instructions or commands. Not to be confused with the clock
that keeps the date and time
Battery: protects unique information about the setup of the computer
against loss when electrical power turned off.
9
summary
10
4
output

Processed data or information.
Types of output
1- Text
2- Graphics
3- Audio & video
Output devices
Are any hardware used to provide or create output
from the computer. They translate information that
has been processed by the system unit into a form
that human can understand.
11
Output
12
Input / Output
13
6
Support Hardware
Surge suppressor: used to prevent large power spike
UPS: uninterruptible power supply. Prevent high-power
spikes and provide the computer with a constant
source of power.
14
Chapter Summary




The three stages of computing are input,
processing, and output.
Various components perform each stage of
computing.
Some components perform both input and
output.
Hardware support components help to ensure
safe computer operation and efficient
performance.
15
HW2


What is the difference between the CPU and
GPU?
Other Examples of the OUTPUT devices?
Last date to submit the HW is Monday, 15th
March 2010.
16