Fetch Execute cycle

The program counter is initialised, and points to the next instructions.

The address in the program counter is then copied to the MAR.

The address in the MAR goes through the address bus.

The data stored in the address is found in memory and copied to the memory buffer register.

The data, containing the instruction is copied to the current instruction register via the data bus

The data in the CIR is decoded.

The instruction could then point to another address in mermory that needs to be retireved, or a process that can occur

According to the data, the data is then executed