MACHINE CYCLE Part 1

Every instruction cycle (Fetch and Execute) consists of some machine cycle, in which data is being transferred on register level.

Here we will try to understand one machine level

1. CPU Addresses Memory (Instruction Fetch) .

a. CPU Addresses memory via address bus

2. Memory needs to know that what type of signal its has received and how should it respond.

3. The CPU generates control signal (READ) .

a. CPU can also generate write signal , which we will cover later

4. Memory Reponses and place the data/instruction on data bus

5. CPU reads the instruction

Answer : For such scenario, CPU will place three addresses on the bus