Question

a) In order to execute a program, instructions must be transferred from memory along a bus to the CPU. If the bus has 8 data lines, at most one 8 bit byte can be transferred at a time. How many memory accesses would be needed in this case to transfer a 32 bit instruction from memory to the CPU? ​

Answer 1

Answer: 4 memory accesses

.........We should now focus on the 8 bit byte and how many can it transfer at a time. Notice how I bolded that word so we no know that we should fivide the 32 bit instruction divided by the 8 bit byte which would be 4 memory acesses