In the

phase of an instruction, first the contents of the PC are copied to

Then the

signal is sent to memory. Update

with the contents from

The last step is to increase the

Fetch, MAR, Read, IR$,$ MDR$,$ PC

Fetch, Memory, Read, IR$,$ MAR, PC

Execute, Registers, Fetch, MAR, PC$,$ MAR

Decode, IR$,$ Write, MAR, PC$,$ MDR