Fetch-Decode-Execute Cycle Quiz

The ALU is responsible for:

• Storing data

• Performing arithmetic and logic operations

• Holding the next instruction address

Which step involves checking the program counter for the next instruction's address?

• Decode

• Fetch

• Execute

Which component stores the address of the next instruction to be fetched?

• Memory Data Register (MDR)

• Program Counter (PC)

• Current Instruction Register (CIR)

What register holds the instruction that is currently being decoded?

• Memory Address Register (MAR)

• Current Instruction Register (CIR)

• Accumulator

Data retrieved from main memory is temporarily stored in which register?

• Program Counter (PC)

• Memory Data Register (MDR)

• ALU

Which of the following is NOT a possible action during the execution stage?

• Performing a calculation.

• Fetching data from main memory.

• Storing information back in main memory.

During the decode stage, the CPU:

• Fetches the next instruction.

• Figures out what the instruction means.

• Carries out the instruction.

The memory address register stores the data itself.

• True

• False

The current instruction register holds the instruction currently being decoded.

• True

• False

The ALU is responsible for storing data.

• True

• False