Please solve with steps so I understand, thank you!

(a) Illustrate the instruction cycle by describing the operation of the following hypothetical machine. Numbers are presented in base 10. The machine has 4 opcodes 1Load AC from memory 2Store AC to memory 5-Add to AC from memory 6Multiply AC from memory The instruction format is as follows. The first (leftmost) digit is an opcode, and the remaining three digits give the address of an operand Show the resulting changes to the values held in registers (PC, AC and IR) and memory when a computation is started with a value of 122 in the PC, and the following values held in memory [6 marks] Memory Address Memory Value 122 123 124 125 126 127 1702 6701 2701 1702 6701 2700 0012 0012 0002 702