Following are the difference between analog communication and digital communication:
| Analog communication | Digital communication |
|---|---|
| Analog communication is converted original information into equivalent analog signal. | Digital communication is converted original information into equivalent digital signal. |
| In analog communication the coding is not possible. | In digital communication the coding techniques used to detect and correct the errors. |
| It has poor noise immunity. | It has excellent noise immunity. |
| In analog communication, the signal can take up voltage level corresponding to any real number, | In digital communication signal can take up only one among two voltage levels corresponding to 1 and 0. |
| It is not appropriate for secret transmission such as military, police etc. | Because of coding techniques it suitable for police military etc. |
| It required less bandwidth. | It required more bandwidth. |
| FDM is used for multiplexing. | TDM is used for multiplexing. |
