Basic Computer Knowledge – Revision Notes — Study Resource

BASIC COMPUTER KNOWLEDGE – REVISION NOTES

1. What is a computer?
A computer is an electronic device that accepts input, processes data and produces output.

2. Hardware
The physical parts of a computer.
Examples: Keyboard, mouse, monitor, CPU and printer.

3. Software
Programs that tell a computer what to do.
Examples: Windows, Linux, Microsoft Word and Google Chrome.

4. CPU
CPU stands for Central Processing Unit. It executes instructions and processes data.

5. RAM
RAM stands for Random Access Memory. It temporarily stores data used by running programs. Its contents are lost when power is switched off.

6. Storage
SSDs and hard drives store files even when the computer is switched off.

7. Input and output devices
Input devices: Keyboard, mouse, microphone and scanner.
Output devices: Monitor, printer and speakers.

8. Internet and browsers
The internet connects computer networks worldwide.
A browser helps you access websites.
Examples: Chrome, Firefox and Edge.

9. Common Windows keyboard shortcuts
Ctrl + C: Copy
Ctrl + V: Paste
Ctrl + X: Cut
Ctrl + Z: Undo
Ctrl + S: Save
Ctrl + A: Select all

10. Basic online safety
Use strong passwords, avoid suspicious links and never share passwords or OTPs.

This resource is created for testing purposes only.