What Is Difference Between Analog And Digital Communications?


5 Answers

Monica Stott Profile
Monica Stott answered
  • Main differences between analog and digital communications
Digital communications use discontinuous valves to transmit communication whereas analog communications use continuous valves. Digital communications are much more discrete and are not so prone to interference so tend to carry the information with better quality. It will be received with higher quality sound, image and video quality so is much more suitable for television. Analog takes an image, video or sound and translates it into an electric pulse whereas digital turns the information into a code which is then digitally transmitted.

  • Analog Communications
Analog communication is a form of transmitting data such as voice, image or video using continuous signals. This is a relatively inexpensive way to transmit data. Analog communications are usually sent via twisted cables or fiber optic cables and they are transmitted via a carrier signal which is set at a specific frequency.

Until recently, most telephone, radio and television signals were sent via analog communication devices and is still used in circumstances where information is sent just a short distance due to the inexpensive nature of analog. In situations where analog was primarily the method of transmitting data, digital is now taking over. This is because analog is often open to interference and the communication is not always as clear as it should be. Many countries have now stopped using analog TV completely as the picture and sound quality is far superior on digital TV.

  • Digital Communications
Digital communication is now a much more common and desirable method of transmitting data. Digital information is put into a synchronized order to enable transmission. The information is then decoded when it reaches its final destination. There are not many opportunities for errors when using this method so information arrives intact and in the best quality possible.
Anonymous Profile
Anonymous answered
In analog communication, amplitude and frequency varies together, where as in digital communication, when amplitude varies, the frequency remains constant and when frequency varies, the amplitude remains constant
nasreen sanu Profile
nasreen sanu answered
Analog communication requires less bandwidth and digital communication requires more bandwidth
mahathi charu Profile
mahathi charu answered
In analog communication analog signal is transmitted into a electronic pulses where as in digital communication the signal is breaked into a binary format and then transmitted.
Analog gives richer quality and digital offers better clarity...
Richard Hughes Profile
Richard Hughes answered

The primary difference between analog and digital communication is the difference in the concept behind "continuous time" and "discrete time". Continuous time signals have a value at every point in time, no matter how thin you slice between two time points.
Discrete time is based upon samples.
Analog communications is based upon continuous time signals.
A digital communications signal is based upon discrete time where the signal is first sampled and converted to a digital signal. That discrete signal is then transmitted to the destination.

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