WJEC 1.1.1 Hardware - Architecture

What does CPU stand for?

• Control Processing Unit
• Central Processing Unit
• Central Power Unit
• Center Power Unit

What is the purpose of the CPU?

• To process all the data and instructions.
• To turn the computer on.
• To create PowerPoint presentations.
• To provide power to the computer.

What is the main function of the CPU?

• To carry out processing of the data.
• To help with playing games.
• To fetch instructions from memory, decode them and execute the instructions.
• To heat up the computer.

What are registers used for?

• To check that students are in school.
• To temporarily hold bits of data needed by the CPU.
• To make sure that the CPU runs properly.
• To make the CPU faster.

What is a bus?

• A circuit that connect one part of CPU to other components.
• A type of long term memory
• A type of permanent memory
• A method of transport

Used to carry the address to which the data is being transmitted.

• Data Bus
• Address bus
• Control Bus

What is the main feature of the von Neumann Computer architecture?

• There is a single PRIMARY MEMORY for both data and instructions.

• The model as a single CPU

• The instructions are stored in PRIMARY MEMORY

• Data is stored in SECONDARY STORAGE

What is the difference between Harvard and Von Neumann?

• Harvard has separate stores for data and instructions, VN does not

• Processing capacity; VN is faster

• VN has separate stores for data and instructions, Harvard does not

• Processing capacity; Harvard is faster

What does the Control Unit do?

• Performs Arithmetic and Logical operations

• Decodes and directs instructions to be carried out

• Stores frequently used data and instructions

• Processes graphical functions

What does the ALU do?

• Performs Arithmetic and Logical operations
• Decodes and directs instructions to be carried out
• Stores frequently used data and instructions
• Processes graphical functions