GCSE CS - 1.1 CPU

What does CPU stand for?

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

What is the main function of the CPU?

• To make sure that the RAM is working properly
• To get the computer started and complete the boot sequence
• To carry out the fetch-decode-execute cycle.
• To make sure that the computer is functioning properly

What does the CPU process?

• Data
• Instructions
• Data and instructions
• Information

The stages required for processing are known as the....

• Fetch-Execute-decode
• Process-decode-fetch
• Fetch-Decode-Execute
• Process

What happens during the fetch stage?

• The CPU fetches data and instructions from main memory and stores them in its own registers.
• The CPU fetches instructions from the hard drive.
• The CPU fetches instructions from the ROM
• The CPU fetches data and instructions from the registers

What happens at the decode step of the fetch-decode-execute cycle?

• The CPU works out what the instruction that it has fetched actually means.
• This is where the instruction is processed.
• This is where data is fetched from the main memory.
• It is where the CPU transfers instructions from the memory.

Which best describes the CPU's execute job?

• Carries out the instruction
• Executes the binary
• Calculates the binary
• Sends to an output device

What is the function of the control unit?

• Has overall control of the CPU.  It's in charge of the F-D-E cycle
• It does all of the calculations
• It is very fast memory in the CPU
• The CPU runs programs stored in memory

What does clock speed mean?

• How fast it stores instructions
• How fast it stores data
• How fast it travels when thrown
• How many F-D-E cycles it can do per second

What does ALU stand for?

• Arguable Logic Unit
• Arithmetic Larger Unit
• Arithmetic Logic Unit 
• Arithmetic Logic Utility