Question 1 a. With the aid of a diagram, explain the basic fetch - instruction cycle. (6 marks) b. In a sentence or two explain the following states of the fetch-execute cycle: (1 mark each) i. Instruction address calculation (iac) ii. Instruction fetch (if) iii. Instruction operation decoding (iod) iv. Operand address calculation (oac) c. Differentiate between computer architecture and computer organization. In your answer, include some of the attributes of the two. (5 marks) Question 2 a. With the aid of a diagram, explain the four structural components the CPU. (6 marks) b. On the IAS, describe in English the process that the CPU must undertake to read a value from memory and to write a value to memory in terms of what is put into the MAR, MBR, address bus, data bus, and control bus. (6 marks) c. What are the essential elements of a computer instruction