Understanding CPU Structure and Function

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

• To store data temporarily

• To perform arithmetic and logical operations

• To manage input and output devices

• To control the flow of instructions

Which component of the CPU is responsible for fetching, decoding, and executing instructions?

• Memory Address Register (MAR)

• Control Unit

• Accumulator (ACC)

• Data Bus

What does the Program Counter (PC) hold?

• The result of the last calculation

• The address of the next instruction to be executed

• The current instruction being executed

• The data to be written to memory

Which register temporarily holds data that is being transferred to or from memory?

• Memory Address Register (MAR)

• Memory Data Register (MDR)

• Accumulator (ACC)

• Program Counter (PC)

What is the main purpose of the Accumulator (ACC) in the CPU?

• To store the address of the next instruction

• To temporarily store intermediate results of calculations

• To hold the current instruction

• To manage the control signals

Which register holds the address in memory where data is to be read from or written to?

• Memory Address Register (MAR)

• Memory Data Register (MDR)

• Accumulator (ACC)

• Current Instruction Register (CIR)

During the Fetch-Decode-Execute cycle, what happens to the Program Counter (PC) after fetching an instruction?

• It is reset to zero

• It increments to point to the next instruction

• It stores the result of the operation

• It is cleared

Which bus is responsible for carrying signals that control the actions of the CPU and other components?

• Data bus

• Address bus

• Control bus

• Power bus

What is the effect of increasing the clock speed of a CPU?

• It increases the number of instructions executed per second

• It increases the size of the cache

• It increases the number of cores

• It increases the physical size of the CPU

Which of the following is NOT a factor affecting CPU performance?

• Clock speed

• Number of cores

• Cache size

• Screen resolution