CPU Registers Flashcards

Small, fast storage locations within the CPU used to hold data temporarily during processing.

Holds the memory address of the next instruction to be executed.

Holds the memory address of the data or instruction to be fetched or stored.

Holds the actual data or instruction that has been fetched from memory or is to be written to memory.

Holds the intermediate results of calculations performed by the ALU.

Registers are used to temporarily store data and instructions during the fetch–execute cycle.

Registers play a key role in the fetch–execute cycle by storing addresses, instructions, and data during processing.

Registers are faster than cache and RAM, allowing quick access to data during processing.

Registers such as the MAR, MDR, PC, and ACC are part of the Von Neumann architecture.

MAR holds the address of the data or instruction, while MDR holds the actual data or instruction itself.