Problem 1. Suppose that the following instruction is found at the given address/location in memory: The instruction LDA 20 residing at address 05 loads the contents of memory location 20 , which is 15, into the Accumulator (A). (a) Draw the diagram below showing the flow and contents of the CPU (PC, IR, A), MAR, Memory, and MDR, after each of the 5 steps of the fetch-execute cycle is executed. Number the steps 1-5. For help see page 5 in the lecture notes for Chapter 7 and the video recording of Chapter 7. (b) Fill in the table below with the contents of the PC, MAR, MDR, IR, and A as each of the 5 steps of the fetch-execute cycle is performed for that instruction. If the content of the register is unknown, write a question mark