The common principle of all machines invented by humans
 

Example of a machine: the 4 stroke engige

The 4 separate strokes of a gasoline engine:

The common principle of all machines invented by humans
 

Watch the 4 different stroke in this figure again:

Notice that the steps can be repeated over-and-over-again !!!

The Instruction Execution cycle of the CPU - Intro
 

The Instruction Execution cycle of the CPU - the (4) phases

The phases of the instruction execution cycle:

(I will illustrate the 4 phases in the next 2 webpages)