OCR J277 - 1.1 - CPU and Embedded Systems - Knowledge Check

Which of the following is a main purpose of the CPU?

• To carry out the fetch-execute cycle

• To store large amounts of data permanently

• To display graphics on the monitor

• To connect to the internet

What does the ALU (Arithmetic Logic Unit) in a CPU do?

• Performs arithmetic and logical operations

• Stores data permanently

• Controls the flow of data to the printer

• Manages internet connections

Which component of the CPU is responsible for controlling the execution of instructions?

• CU (Control Unit)

• Cache

• Accumulator

• MDR (Memory Data Register)

What is the main function of the cache in a CPU?

• To store frequently used data for quick access

• To perform arithmetic operations

• To control the monitor display

• To connect to external devices

Which register in the Von Neumann architecture holds the address of the next instruction to be executed?

• Program Counter

• Accumulator

• Cache

• ALU

What does the MAR (Memory Address Register) store?

• The address of data to be accessed

• The result of arithmetic operations

• The instructions to be executed

• The speed of the CPU

Which of the following is NOT a component of the Von Neumann architecture?

• Graphics Card

• MAR (Memory Address Register)

• MDR (Memory Data Register)

• Accumulator

What is the main purpose of the MDR (Memory Data Register)?

• To store data being transferred to or from memory

• To control the execution of instructions

• To perform logical operations

• To store the next instruction address

Which of the following best describes the fetch-execute cycle?

• The process by which the CPU retrieves and executes instructions

• The process of saving files to a hard drive

• The process of printing documents

• The process of connecting to the internet

What is the difference between storing data and storing an address in a register?

• Data is the actual value, while an address points to a location in memory

• Data is always a number, while an address is always a letter

• Data is stored permanently, while addresses are temporary

• There is no difference