J277 - Understanding CPU Components and Functions

What is the main function of the Central Processing Unit (CPU) in a computer?

• To store data permanently

• To execute the instructions of programs

• To provide power to the computer

• To display graphics on the screen

Which component of the CPU is responsible for performing arithmetic calculations and logical operations?

• Control Unit

• Arithmetic and Logic Unit (ALU)

• Memory Unit

• Register

What is the role of the control unit in the CPU?

• To perform arithmetic calculations

• To store data temporarily

• To organise the execution of instructions

• To display output on the monitor

What does the clock in the CPU do?

• It stores data permanently

• It controls the rate at which instructions are executed

• It displays the current time

• It manages the power supply

How is clock speed measured?

• In bytes

• In gigabytes

• In gigahertz (GHz)

• In pixels

What would happen if the clock in the CPU failed?

• The computer would run faster

• The computer would stop executing instructions

• The computer would display incorrect time

• The computer would overheat

What is the purpose of general-purpose registers in the CPU?

• To store the results of intermediate calculations

• To permanently store data

• To manage power supply

• To display graphics

Which register holds the current instruction that the processor is executing?

• Memory Address Register (MAR)

• Program Counter (PC)

• Current Instruction Register (CIR)

• Accumulator

What is the first stage of the fetch-decode-execute cycle?

• Decode

• Execute

• Fetch

• Store

During the decode stage of the fetch-decode-execute cycle, what happens?

• Instructions are executed

• Instructions are fetched from memory

• Instructions are decoded to determine what actions are needed

• Data is stored in memory