9 Understanding Computers Lesson 3b

During the Fetch-Decode-Execute cycle, the software to be run is located in main memory (RAM)

• True
• False

What Do the letters PC stand for in the PC Register

• Program Counter

• Process Counter

• Programmer Counter

• Counter Strike

What does the MAR stand for?

• Memory Address Register

• Memory Addressed Register

• Memory Access Register

• Memory Aardvark Register

The Fetch-Decode-Execute cycle runs continuously when the computer is turned on.

• True

• False

Which of these is not a step in the FDE cycle?

• Instructions are fetched from main memory
• Instructions are decoded in the control unit
• The decoded instruction is executed
• The ALU decodes the instructions

Clock speed measures what?

• Speed at which instructions are fetched from main memory
• Time taken to perform a single Fetch-Decode-Execute cycle
• Number of Fetch-Decode-Execute cycles that can be completed in 1 sec
• Speed at which instructions are decoded 

What does ALU stand for?

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

Which of these are REGISTERS in the CPU? (Tick ALL that are correct)

• Accumulator

• ALU

• Program Counter

• Memory Address Register

• Control Bus Register

The small high speed storage areas within the memory and processor are known as..?

• Registers
• Addresses
• Cache
• Buses

Accumulator

• Stores the address of the next instruction in memory

• Stores the address of where the next item will be fetched from

• Stores data fetched from memory, or waiting to be stored in memory

• Stores the result of arithmetic calculations