go to home page   go to next page hear noise

revised: 01/18/99, 01/16/00, 09/01/01, 01/08/06, 05/15/2014

CHAPTER 2 — Analog and Binary Signals

Wrist Watch

Everyone knows that computers are "digital" and that they use "binary" numbers. You probably have some idea of what these terms mean. But we need to be clear about their precise meaning and to be clear about why computers are digital.

Chapter Topics:

Study these topics carefully if you want to know what is really going on with computers.


Why is a digital wristwatch called "digital"?