CPU Components and Functions Quiz

What is the primary role of the central processing unit (CPU) in a computer?

• To gather input from various devices

• To store data permanently

• To display output on the screen

• To process instructions and manage data flow

Which component of the CPU is responsible for coordinating all its activities?

• Arithmetic Logic Unit

• Control Unit

• Program Counter

• Memory Data Register

What does the Program Counter hold?

• The current instruction being executed

• The status of the CPU

• The address of the next instruction to be executed

• The result of the last arithmetic operation

Which register temporarily stores data read from or written to main memory?

• Program Counter

• Memory Address Register

• Current Instruction Register

• Memory Data Register

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

• To perform arithmetic and logical operations

• To decode instructions

• To store the next instruction address

• To manage data flow between CPU and memory

Why are general-purpose registers important in a CPU?

• They temporarily store data for quick access

• They hold the address of the next instruction

• They store permanent data

• They manage the control signals

What is the role of the address bus in a CPU?

• To carry data between CPU and memory

• To carry memory addresses for data read/write

• To carry control signals

• To store temporary data

Which bus is responsible for carrying command and control signals?

• Control Bus

• Address Bus

• Memory Bus

• Data Bus

What is the function of the decode unit in a CPU?

• To store the next instruction address

• To perform arithmetic operations

• To decode and prepare instructions for execution

• To manage data flow

What is the purpose of cache memory in a CPU?

• To manage control signals

• To store permanent data

• To provide fast access to frequently used data

• To decode instructions