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प्रश्न
Distinguish between ‘Analog’ and ‘Digital’ forms of communication.
उत्तर
| Analog form of communication | Digital form of communication |
| It makes use of analog signals whose amplitude varies continuously with time. |
It makes use of digital signals whose amplitude is of two levels, either low or high. |
| The retrieved message in analog communication is not an exact copy of the original message. This is because the message suffers distortions over the medium and during its detection process and is distorted. |
The retrieved message in digital communication is always the exact copy of the original message and is practically free of distortion.
|
| It can broadcast only limited number of channels simultaneously. |
It can broadcast tremendously large number of channels simultaneously. |
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