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Digital and Analog System

Digital as well as Analog System, both are used to transmit signals from one
place to another like audio/video. Digital system uses binary format as 0 and 1
whereas analog system uses electronic pulses with varying magnitude to send

data.

Following are some of the important differences between Digital System and
Analog System.

Sr. Key Digital System Analog System
No.

Signal Type Digital System uses discrete signals as Analog System uses continous
1 on/off representing binary format. Off signals with varying magnitude.
is 0, On is 1.

2 Wave Type Digital System uses square waves. Analog system uses sine waves.

Technology Digital system first transform the Analog systems records the
analog waves to limited set of numbers physical waveforms as they are
3
and then record them as digital square originally generated.
waves.

Transmission Digital transmission is easy and can be Analog systems are affected badly
4
made noise proof with no loss at all. by noise during transmission.

Flexibility Digital system hardware can be easily Analog system's hardwares are not
5
modulated as per the requirements. flexible.

Bandwidth Digital transmission needs more Analog tranmission requires less
6
bandwidth to carry same information. bandwidth.

Memory Digital data is stored in form of bits. Analog data is stored in form of
7
waveform signals.

Power Digital system needs low power as Analog systems consume more
8
requirement compare to its analog counterpart. power than digital systems.

Best suited Digital system are good for computing Analog systems are good for
9
for and digital electronics. audio/video recordings.

10 Cost Digital system are costly. Analog systems are cheap.

Example Digital system are: Computer, CD, Analog systems are: Analog
11 DVD. electronics, voice radio using AM
frequency.