CHAPTER THREE
BASIC COMPUTER OPERATIONS AND CONCEPTS
Performance Objectives
By the end of this unit the students should be able to:
1. Define a computer
2. Describe computer as Input process and output (IPO)
3. State the advantages and disadvantages of using computers
4. Describe parts of a computer.
5. Describe the Relationship between Hardware, Software and People Ware.
UNIT ONE: BASIC COMPUTER CONCEPTS
DEFINITION OF THE COMPUTER?
Computers are electronic devices used for collecting, processing, analyzing, storing, presenting data and disseminating/displaying information. This means that you can put data in form of words, letters, pictures or sound called inputs into computers. Such data can be processed by the computer and gives out words, letters, text, pictures, videos, movies, or sound.
Computer As- Input-Process-Output (IPO) System
Computers are considered as input, processing and display device, because they can receive data (Input), process data and send out data (Output). These processes are illustrated in the picture below
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