Q.Distinguish between analog communication and digital communication.

Analog communication transmits information as a continuously varying signal, while digital communication transmits it as discrete coded values (1s and 0s). They differ in signal nature, modulation type, circuit complexity, speed, noise level and bandwidth. …

[!TLDR]

Analog communication sends a continuous signal (AM/FM), simple circuits, high noise, small bandwidth; digital communication sends discrete coded values (PCM), complex circuits, very low noise, large bandwidth.

Analog communication and digital communication differ on the following points:

1. Nature of signal: In analog communication the signal is a continuously varying signal having an infinite number of values. In digital communication the signals are represented by a finite set of discrete values.

2. Form of information transmitted: In analog communication the information signal transmitted is analog in nature. In digital communication information of any form is first converted into a digital signal and transmitted as digital signals coded using 1's and 0's.

3. Type of modulation: Analog communication uses modulation types such as AM, FM, PAM and PWM. Digital communication uses PCM (Pulse Code Modulation), in which the information is converted into a series of numbers or digits.

4. Circuitry: Analog communication needs comparatively simple circuitry. Digital communication needs complex circuitry. …