CPU and Processor Architecture

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

• Carries out arithmetic calculations and logical decisions

• Decodes and manages the execution of instructions

• Temporarily stores data and control information

• Transmits control signals to coordinate processor actions

What is the function of the Control Unit (CU)?

• Carries out arithmetic calculations and logical decisions

• Decodes and manages the execution of instructions

• Temporarily stores data and control information

• Transmits control signals to coordinate processor actions

Which register holds the address of the next instruction to be processed?

• Program Counter (PC)

• Accumulator (ACC)

• General Purpose Register (GPR)

• Memory Address Register (MAR)

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

• Contains the address of the next instruction or data item

• Stores the results of arithmetic calculations

• Temporarily stores data and control information

• Acts as a buffer for data/instructions between memory and processor

What does the Current Instruction Register (CIR) hold?

• The most recently fetched data/instructions

• The address of the next instruction to be processed

• The results of arithmetic calculations

• The opcode and operand of the current instruction

What is the purpose of the Data bus?

• Carries the memory location address

• Transmits control signals

• Carries the data being transmitted between registers and memory

• Coordinates the movement of data through the processor

What is the purpose of the Address bus?

• Carries the memory location address

• Transmits control signals

• Carries the data being transmitted between registers and memory

• Coordinates the movement of data through the processor

What is the purpose of the Control bus?

• Carries the memory location address

• Transmits control signals

• Carries the data being transmitted between registers and memory

• Coordinates the movement of data through the processor

What is the first step in the Fetch-Decode-Execute (FDE) cycle?

• Fetch

• Decode

• Execute

• Increment the Program Counter (PC)

What is the purpose of increasing the clock speed of a processor?

• To carry out arithmetic calculations and logical decisions

• To decode and manage the execution of instructions

• To store data and control information

• To execute more instructions per second