REVISION 2 INTERNAL COMPONENTS OF COMPUTER SYSTEMS Unit

REVISION 2 | INTERNAL COMPONENTS OF COMPUTER SYSTEMS Unit 2 | Technology Systems

Lesson Objectives • By the end of this session, you will be able to: • Describe components of the Von Neumann model • Identify key motherboard components

Marketplace Task • Group 1: CPU • Group 2: ROM • Group 3: RAM • Group 4: Input / Output • 15 minutes: Initial research and mind-mapping • 10 minutes: Scouts visit other stalls • 10 minutes: Scouts feedback to rest of group • 10 minutes: Assessment • See question prompts on next slide to get you thinking. . .

Question Prompts • What role does that component play in a Computer system? • How does it work? • Does it have a unique structure or make-up? • Are there different variants? • Can you summarise it with relevant diagrams?

Von Neumann Model • The Von Neumann model is a high level block diagram of a computer system • The Von Neumann model was proposed by John Von Neumann. • John Von Neumann was a Hungarian mathematician and his model of a computer is still relevant today – for all different devices.

Data Bus R O M R A M Control Bus Address Bus INPUT / OUTPUT C P U

Von Neumann Model • The Von Neumann model shows how the 4 main components of a computer, CPU, ROM, RAM & IO are all connected together by buses • A bus is just a connection for transferring data • 3 types of bus • Data Bus for carrying data • Address Bus for carrying memory addresses • Control Bus for carrying processor commands

Task: Motherboard • Using the photograph of the motherboard provided, try and label the following components; • CPU • Heat Sink • ROM • RAM • CMOS Battery • PCI Bus

Lesson Objectives • By the end of this session, you will be able to: • Describe components of the Von Neumann model • Identify key motherboard components