Language – digital communications requires a language which should be possessed by both sender and receiver and should specify meaning of symbol sequences.

Synchronization – digital communication uses specific synchronization sequences for determining synchronization.

Although digital representations are discrete, the information represented can be either discrete, such as numbers or letters, or continuous, such as sounds, images, and other measurements of continuous systems.ĭigital information has certain properties that distinguish it from analog communication methods. By contrast, non-digital (or analog) systems use a continuous range of values to represent information. It differs from a digital signal in terms of small fluctuations in the signal which are meaningful.Ī digital signal uses discrete (discontinuous) values. Digital signalsĪn Analog signal is any continuous signal for which the time varying feature (variable) of the signal is a representation of some other time varying quantity, i.e., analogous to another time varying signal. There is no guarantee that digital signal processing can be done in real time and consumes more bandwidth to carry out the same information.ĭigital instrument drawS only negligible powerĪnalog instruments usually have a scale which is cramped at lower end and give considerable observational errors.ĭigital instruments are free from observational errors like parallax and approximation errors.ĭefinitions of Analog vs. Best suited for audio and video transmission.īest suited for Computing and digital electronics.Īnalog signal processing can be done in real time and consumes less bandwidth. Less affected since noise response are analog in natureĭigital hardware is flexible in implementation.Ĭan be used in analog devices only. More likely to get affected reducing accuracy Subjected to deterioration by noise during transmission and write/read cycle.Ĭan be noise-immune without deterioration during transmission and write/read cycle. Samples analog waveforms into a limited set of numbers and records them. Human voice in air, analog electronic devices.Ĭomputers, CDs, DVDs, and other digital electronic devices.Īnalog technology records waveforms as they are. Uses discrete or discontinuous values to represent information Uses continuous range of values to represent information Comparison chart Analog versus Digital comparison chartĪnalog signal is a continuous signal which represents physical measurements.ĭigital signals are discrete time signals generated by digital modulation.

A plain digital to analog tv converter