Internal Components of a Processor

What is the main responsibility of the control unit?

• Coordinate all activities of the processor

• Perform arithmetic and logical operations

• Hold the address of the next instruction

• Temporarily store data from main memory

What does the program counter hold?

• The address of the next instruction

• The current instruction being executed

• The address of the memory location to be written

• The binary ones and zeros of the data

What is the purpose of the memory address register?

• Hold the address of the memory location to be fetched or written

• Temporarily store data from main memory

• Hold the current instruction being executed

• Perform arithmetic and logical operations

What does the current instruction register contain?

• The current instruction being executed

• The address of the next instruction

• The binary ones and zeros of the data

• The address of the memory location to be written

What is the purpose of the arithmetic logic unit (ALU)?

• Perform arithmetic and logical operations on data

• Coordinate all activities of the processor

• Hold the address of the next instruction

• Temporarily store data from main memory

What is the role of the accumulator?

• Store data or control information inside the CPU

• Perform arithmetic and logical operations on data

• Hold the address of the next instruction

• Temporarily store data from main memory

What is the purpose of the address bus?

• Carry memory addresses for data read from or written to memory

• Carry binary ones and zeros of the information

• Carry command and control signals to and from other components

• Coordinate all activities of the processor

What is the function of the data bus?

• Carry binary ones and zeros of the information

• Carry memory addresses for data read from or written to memory

• Carry command and control signals to and from other components

• Perform arithmetic and logical operations on data

What does the control bus carry?

• Command and control signals to and from other components

• Memory addresses for data read from or written to memory

• Binary ones and zeros of the information

• Arithmetic and logical operations on data

What is the purpose of cache?

• Provide fast access to frequently used instructions and data

• Coordinate all activities of the processor

• Perform arithmetic and logical operations on data

• Temporarily store data from main memory