JSS2 First Term Internet and Communication Technology (ICT) Lesson Note – Application Software

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WEEK 3

TOPIC: COMPUTER SOFTWARE

CONTENT

1. Types of System Software explained
2. Application Software (word processing, spreadsheet, graphics)

Subtopic 1: 

Types of System Software

Operating system: This is a set of programs that coordinates all the activities among computer hardware devices. It also contains instructions that allow users to run application software. When a user starts a computer, portions of the operating system (OS) load into memory from the computer’s hard disk. It remains in memory while the computer is on. The operating system provides a means for users to communicate with other software.

Examples of Operating System

1. Microsoft Disk Operating System (MS-DOS)
2. Windows OS
3. Linux
4. Unix
5. Xenix
6. Ubuntu
7. Novell Netware
8. MAC OS
9. Symbian OS
10. Palm OS
11. JAVA etc.

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