|Analog signals are continuous signals.
|Digital signals are discrete signals.
|It uses continuous value for representing the information.
|A digital signal uses a discrete value for representing the signal.
|It can be affected by the noise during the transmission.
|It cannot be affected by the noise during the transmission.
|Accuracy of this signal is affected by the noise.
|The noise is immune hence their accuracy is less affected.
|Devices using this signal are less flexible.
|Devices using this signal are more flexible.
|These signals consumed less bandwidth.
|These signals consumed more bandwidth.
|Analog signals store in the form of continuous wave form.
|Digital signal stored in the form of binary bits i.e 0 or 1.
|Low cost signals.
|High cost signals.
|They are portable.
|They are not portable.
|Signals give observation errors.
|Signals do not give observation errors.
|Examples: thermometer, analog phones etc.
|Examples: digital phones, computers,CD,DVD etc.