Please show full working so I can understand. Thank you!

(b) 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 fr 2 - Store AC to memory 3Add to AC from memory 4Multiply 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 210 in the PC, and the following values held in memory rom memory [6 marks] Memory Address Memory Value 210 211 212 213 214 1321 4321 4320 3322 2321 320 321 322 0003 0005 0020