EoY Yr 9 - Systems Architecture

Which component of the CPU is responsible for carrying out arithmetic and logic operations?

• Control Unit (CU)

• Arithmetic Logic Unit (ALU)

• Program Counter (PC)

• Memory Address Register (MAR)

What does the Program Counter (PC) do in a CPU?

• Stores the result of calculations

• Holds the address of the next instruction to be executed

• Performs arithmetic operations

• Stores data fetched from memory

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

• Memory Address Register (MAR)

• Memory Data Register (MDR)

• Accumulator (ACC)

• Control Unit (CU)

What is the main function of the Control Unit (CU) in the CPU?

• Perform calculations

• Store data

• Manage and coordinate the activities of the CPU

• Increase clock speed

Which register is used to store the results of operations performed by the ALU?

• MAR

• MDR

• ACC

• PC

During the Fetch-Decode-Execute cycle, what is the purpose of the 'Decode' stage?

• To retrieve the next instruction from memory

• To interpret the instruction and prepare necessary signals

• To perform the actual operation specified by the instruction

• To store the result in memory

Which factor does NOT directly affect CPU performance?

• Number of cores

• Clock speed

• Size of cache

• Screen resolution

What is the main advantage of having multiple cores in a CPU?

• Reduces power consumption

• Allows multiple instructions to be processed at the same time

• Increases the size of RAM

• Improves screen brightness

Which type of memory is volatile and loses its data when the power is turned off?

• RAM

• ROM

• Hard Disk

• SSD

What is the main function of RAM in a computer system?

• Store permanent data

• Store data and instructions currently in use

• Control the CPU

• Store the BIOS