1.1.1 Structure and function of the processor

What is the primary function of the Arithmetic and Logic Unit (ALU)?

• Storing data.

• Executing arithmetic and logical operations.

• Controlling the flow of data.

• Fetching instructions from memory.

Which component of the CPU controls the execution of instructions?

• ALU.

• Registers.

• Control Unit.

• Memory.

What is the purpose of the Program Counter (PC)?

• To store the result of an operation.

• To hold the address of the next instruction to be executed.

• To store data temporarily.

• To hold the instruction currently being executed.

Which register holds the data fetched from memory?

• PC.

• ACC.

• MAR.

• MDR.

Which bus carries memory addresses?

• Data bus.

• Address bus.

• Control bus.

• Power bus.

Which bus carries data between the CPU and memory?

• Address bus.

• Control bus.

• Data bus.

• Power bus.

What is the function of the control bus?

• To carry data.

• To carry addresses.

• To transmit control signals.

• To store instructions.

What is the first step in the Fetch-Decode-Execute cycle?

• Decode.

• Execute.

• Fetch.

• Store.

What happens during the "decode" phase of the cycle?

• The instruction is executed.

• The address of the next instruction is fetched.

• The instruction is interpreted.

• Data is stored in memory.

What happens during the "execute" phase?

• The instruction is fetched from memory.

• The instruction is decoded.

• The operation specified by the instruction is performed.

• The address of the next instruction is loaded.