1. CPD 2113
TECHNOLOGY IN ELT
B.Sc. Ed (TESL) UTM, Skudai
2. COMPONENTS OF A
A computer system has three main components
A computer system performs 4 important tasks
Receiving input : figures, facts or sets of instructions
Storing information : place in memories
Processing the data : act on the information
Outputing the information : process and generate
3. 4 MAIN ASPECTS OF DATA
- accept data or commands in a form that the computer can
use: they send the data or commands to the processing unit.
- known as CPU, has electronic circuitry that manipulates
input data into information that people require. The CPU
execute computer instructions.
- display the people the processed data; information in
understandable and usable form
- means secondary storage; consists of secondary storage
devices such as hard disk, diskettes, pendrives.
- can store data and programmes outside the computer itself.
- these devices supplement memory or primary storage, can
hold data or programmes temporarily.
4. 1. What is Input?
Input refers to any data or instructions
that are used by a computer. All
computer processing requires data.
Whenever you use computer or
application software, you are providing
input. You typically use a keyboard to
type text and a mouse to issue
5. Input Devices
Bar code readers
Voice recognition systems
6. 2. What is Process?
The computer manipulates the data to
Information refers to data processed into
a form that has meaning and is useful.
7. Processing Devices/System
Memory – RAM, ROM
Expansion Slots and Cards
Ports and Cables
8. 3. What is Output?
Is a processed data or information.
Output devices provide output to people
by translating what the computer has
processed into a form that people can
understand and use.
10. 4. What is Storage?
Information can be stored in a computer
for future use.
All computers have a hard disk drive to
store programmes and data.
11. Storage Devices
CD-ROM, R, RW
DVD-ROM, R, RW
Pen Drive, Thumb Drive, Zip Drive
External Hard Disk
12. TEST YOUR
13. Visualize these components
and draw them!