This document provides an overview of the main components of a computer system. It describes how a computer takes in input, processes data, stores information, and produces output. Specifically, it defines input devices like keyboards and mice, the central processing unit and motherboard as the devices responsible for processing, storage devices like hard disks that save information, and output devices such as monitors, printers, and speakers. The learning objectives are to describe the hardware components of a computer, provide examples of devices that handle input, output, storage and processing tasks, and differentiate types of input and output devices.

2. Chapter 2

3. In the end of the lesson, student
should be able to..



Describe the main components of a computer
system, hardware.
Provide examples of hardware device that
handle input, output, motherboard and
storage task.
differentiate type of input device and output
device.

4. 1) Introduction of computer
 What is computer?
A programmable machine. The two principal of
characteristic of a computer are:
1)It responds to a specific set of instructions in a
well-defined manner.
2)It can execute a prerecorded list of instructions
(a program).

Evolution of computer
(http://www.computerhistory.org/timeline/)

5. Type of computer
 Computers can be generally classified by size and power
as follows, though there is considerable overlap:
1)
2)
3)
4)
personal computer
minicomputer
mainframe
supercomputer

6. Computer system
Collection of related component that have been
designed to work together. Their perform four
basic operations: input, output, processing and
storage.

7. Overview of computer system
Input
Process
Storage
Output

8. put
In
 What is input?
 Any data or
instructions you enter
into the memory of the
computer
 Users can input data
and instructions in a
variety of ways.
 Example
(keyboard,mouse etc)

9. Overview of computer system
Input
Process
Storage
Output

10. Process
 The execution of arithmetic or comparison operation
on data.
 The devices is motherboard:
A large circuit board containing the computer central processing
unit, support chips, random access memory, and expansion slots.
Also called a main board.

11. A “motherboard”
A RAM chip
Expansion slots
Pins to attach to motherboard

12. Overview of computer system
Input
Process
Storage
Output

13. Outp
ut
 The result of processing
information that enable
people to see, hear, and
even feel that result.
 Example of device is:

1.monitor

2.printer

3.speaker/earphone

14. Overview of computer system
Input
Process
Storage
Output

15. Storage
 Storage that the computer saves
the result of processing to used
again later.
 Storage devices hold all of the
program and data that the
computer uses.
 Example of devices is: a hard disk,
a floppy disk, CD ROM or DVD ROM.

16. Activities

17. Activities..
Group 1. Present about the computer
system.
Group 2. Present the differences of
input devices and output
devices.