The CPU Quiz

The CPU controls what the user can and cannot do.

Processing power depends on:

The three main parts of the CPU include: [blank_start]the control unit[blank_end] (CU), [blank_start]the arithmetic and logic unit[blank_end] (ALU) and the [blank_start]cache[blank_end].

The control unit controls what the user can and cannot access

The cache is very fast memory in the CPU. Recently used applications are stored here so they are quick to access.

The ALU does all of the calculations. The accumulator is stored here

The [blank_start]program counter[blank_end] (PC) holds the [blank_start]memory address[blank_end] of the instruction for each cycle. The accumulator ([blank_start]ACC[blank_end]) stores results of the [blank_start]calculations[blank_end] in the ALU. The Memory Address Register (MAR) stores the any memory address for [blank_start]the next instruction[blank_end] to be carried out by the CPU. The Memory Data Register (MDR) stores data or instructions that have been [blank_start]fetched or waiting to be written[blank_end] to memory.

The fetch in the FDE cycle does:

The decode in the FDE cycle does:

The execute in the FDE cycle performs the instruction