CPU and Registers

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.

1.1 b 
Which register is being described?
Stores the results of the calculations done by the ALU

• MAR
• MDR
• Accumulator
• Program Counter

1.1 b 
Which register is being described?
Holds the memory address about to be used by the CPU

• MAR
• MDR
• Accumulator
• Program Counter

1.1 b 
Which register is being described?
Holds the data / instructions that have been fetched from memory

• MAR
• MDR
• Accumulator
• Program Counter

1.1 b 
Which register is being described?
Holds the memory address of the instruction for each cycle

• MAR
• MDR
• Accumulator
• Program Counter

The ALU is:

• The arithmetic and logic unit

• The arithmetic and logistics unit

• The actual logic unit

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.

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

• Hard Drive
• USB Drive
• RAM
• ROM

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

Clock Speed is usually measured in...

• Mhz

• Ghz

• Hz

• Rhz