Difference Between Digital And Analog System

Analog and digital signals are used to transmit information (such as any audio or video), usually through electric signals. In digital technology, translation of information is into binary format (either 0 or 1) and information is translated into electric pulses of varying amplitude in analog technology.

Comparison between Digital System and Analog System:

Analog System Digital System
Signal Analog signal represents physical measurements. Digital signals are discrete and generated by digital modulation.

Sine Waves Square Waves

Continuous range of values to represent information Uses discrete values to represent information

Records waveforms as they are. Samples analog waveforms into a limited set of numbers and then records them.
Data transmissions

Affected by noise during transmission and write/read cycle. Noise-immune during transmission and write/read cycle.
Response to Noise

More likely to get affected Less likely to get affected

Hardware is not flexible. Hardware is flexible.

Less bandwidth. More bandwidth to carry out the same information

Stored data in the form of wave signal Stored data in the form of binary bit

Consumes large power Consumes negligible power

Best suited for audio and video transmission. Best suited for Computing and digital electronics.

Cost is low Cost is high

Human voice in air, analog electronic devices. Computers, CDs, DVDs,

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