Introduction to Information Technology

What you'll learn

The key areas this subject covers, mapped to the official curriculum.

• From bare hardware to the boot process: how a computer actually works
• Number systems, binary arithmetic and how data is represented inside a machine
• Software stack: system software, operating systems and applications
• Networks, the Internet, and how information travels across the world
• Databases, multimedia and the security concepts that protect it all

Course units

The structured path through this subject.

1. 1

   Introduction to Computer

   What a computer is, how it has evolved, and where it is used.

   5 topics · 5 lessons available

2. 2

   The Computer System Hardware

   The physical building blocks: CPU, motherboard, buses, and storage.

   4 topics · 4 lessons available

3. 3

   Computer Memory

   How memory is organised, from registers to disk.

   4 topics · 4 lessons available

4. 4

   Input and Output Devices

   How data gets in and results get out.

   4 topics · 4 lessons available

5. 5

   Data Representation

   Number systems, binary arithmetic and codes.

   5 topics · 5 lessons available

6. 6

   Computer Software

   The programs that make hardware useful.

   4 topics · 4 lessons available

7. 7

   Data Communication and Computer Network

   How computers talk to each other.

   5 topics · 5 lessons available

8. 8

   The Internet and Internet Services

   From packets to pages: how the Internet works.

   4 topics · 4 lessons available

9. 9

   Fundamentals of Database

   Organising data so it stays consistent and can be queried.

   5 topics · 5 lessons available

10. 10

    Multimedia

    Combining text, audio, images, video and animation.

    4 topics · 4 lessons available

11. 11

    Computer Security

    Protecting information and systems from harm.

    5 topics · 5 lessons available