The CPU reads the contents of the Program Counter to find the address of the next instruction, As soon as it is read, the PC increments., The contents from the PC are then put on the MAR., The address in the MAR is sent across the address bus to locate the contents in RAMc, The control unit sends a read signal across the control bus to read from the memory address, The contents of this address are moved to the MDR via the data bus, The MDR now holds the instruction that must be executed., The instruction in the MDR is then copied to the CIR, as we will often need to use the MDR again to complete the execution of an instruction..

A-level FDE cycle: Order the steps for the FETCH process

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