This document discusses the information processing cycle of a computer system. It defines a computer system as including both hardware and software. It then explains the four main steps of the information processing cycle as: 1) input - entering data into memory, 2) process - transforming data, 3) output - conveying information to the user, and 4) storage - holding data, instructions, and information for future use. As an example, it explains how the information "8x2=16" would go through each step of the cycle.

1. Computer System
1
2.1 System Concept
2.1.1 Overview of Computer System
2.1.2 Data Representation
2.1.3 Storage Capacity
Chapter
PDT - 2017/2018

2. Computer System
1
2.1.1 Overview of Computer System
At the end of this topic, students
should be able to:
a) Describe the operations involved
in information processing cycle
Chapter
PDT - 2017/2018

3. What is Computer System?
2
▪ a complete, working computer, includes
operating system, software and hardware
to make the computer function
(Discovering Computers 2013)

4. Information Processing Cycle
Process
Storage
Output
• Information processing Cycle is a sequence of events in
processing information which work together and repeat
again and again in a cycle.
• All computer systems go through the information processing
cycle.
Input
3

5. Information Processing Cycle
Input
• Process of entering data and instruction into
memory of computer
Output
• Process of conveying information to the user
Process
• Process of transforming data into information
Storage
• Holds data, instructions and information for future
use. 4

6. 5
▪ Information processing cycle is the series
of input, process, output and storage
activities.
▪ Computer process data (input)
into information (output)
▪ Computer holds data, information
and instructions in storage for future
use
Information Processing Cycle

7. EVALUATION :
Question 1 : There are four main steps in information processing cycle. Explain
what are the input, process, output and storage when you are given
information 8x2=16 to be processed.
Answer :
Steps Correct answer Tips
Input Enter 8, 2 by using keyboard
into the memory computer
Don’t write ‘x’ symbol for multiply
because it means process
Process 8, 2 is being multiply by the
processor
Don’t write 16 because it means
output
Output Result of process, 16 is display
on the screen
Don’t write ‘x’ symbol for multiply
because it means process
Storage Data and result of multiplication
8 by 2 = 16 are kept in the
memory for the future use 6