Fetch Decode Execute Cycle - Word Drop

In a von Neumann ______ computer, both instructions and data are held in the same main memory. The ______ is the component made up of the control unit and the ALU.

The ______ is the part of the CPU that coordinates the other parts and performs the ______ step, working out what each instruction means. The ______ is the part of the CPU that performs arithmetic and logical operations. Data being worked on is held in very fast storage locations inside the CPU called ______, and a ______ sends regular pulses to time this work.

In the first stage, ______, the next instruction is brought from main memory, also called ______. The address of that instruction is held in a register inside the CPU. The ______ is a set of wires that carries this address from the CPU to memory. The data bus carries instructions and data, while the control bus carries control signals.

In the final, ______, stage the instruction is carried out, for example a calculation by the ALU.