TABLE OF CONTENTS One of the first things we have to know is that electronics can be broadly classified into two groups, viz. analog electronics and digital electronics. Analog electronics deals with things that are continuous in nature and digital electronics deals with things that are discrete in nature. But they are very much interlinked. For example, if we consider a bucket of water, then it is analog in terms of the content i.e., water, but it is discrete in terms of the container, i.e., bucket. Now though in nature most things are analog, still we very often require digital concepts. It is because it has some specific advantages over analog, which we will discuss in due course of time.
Many of us are accustomed with the working of electronic amplifiers. Generally they are used to amplify electronic signals. Now these signals usually have a continuous value and hence can take up any value within a given range, and are known as analog signals. The electronic circuits which are used to process such signals are called analog circuits and the circuits based on such operation are called analog systems.
On the other side, in a computer, the input is given with the help of the switches. Then this is converted into electronic signals, which have two distinct discrete levels or values. One of them is called HIGH level whereas the other is called LOW level. The signal must always be in either of the two...
