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					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




           4
          10
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




                  6
                 13
         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.




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