Unit 1 OCR Inside the CPU

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 the program counters job?

• To count the programs
• It contains the memory address of the next instruction to be loaded
• It stores instructions
• It carries out the calculations

Which of the following is an example of 'main memory'.

• Hard Drive
• USB Drive
• RAM
• ROM

Which of the following CPU's will have a better better performance:

A: 3 GHz Quad Core CPU

B: 3 GHz Dual Core CPU

• A

• B

How does clock speed affect computer performance?

• The higher the clock speed the slower the computer will run.
• It improves the amount you can store on the computer.
• The higher the clock speed the better the performance.
• It will make loading program slower

Which of these are internal components of the CPU?

• RAM & ROM

• Hard Drive & Motherboard

• The ALU and Cache

How does clock speed affect computer performance?

• The higher the clock speed the slower the computer will run.
• It improves the amount you can store on the computer.
• The higher the clock speed the better the performance.
• It will make loading program slower

What is cache memory?

• A very large, temporary memory
• A very small but expensive memory
• It is used to store data and programs permanently
• It is a type of payment