Comparison chart
| Analog | Digital | |
|---|---|---|
| Signal | Analog signal is a continuous signal which represents physical measurements. | Digital signals are discrete time signals generated by digital modulation. |
| Waves | Denoted by sine waves | Denoted by square waves |
| Representation | Uses continuous range of values to represent information | Uses discrete or discontinuous values to represent information |
| Example | Human voice in air, analog electronic devices. | Computers, CDs, DVDs, and other digital electronic devices. |
| Technology | Analog technology records waveforms as they are. | Samples analog waveforms into a limited set of numbers and records them. |
| Data transmissions | Subjected to deterioration by noise during transmission and write/read cycle. | Can be noise-immune without deterioration during transmission and write/read cycle. |
| Response to Noise | More likely to get affected reducing accuracy | Less affected since noise response are analog in nature |
| Flexibility | Analog hardware is not flexible. | Digital hardware is flexible in implementation. |
| Uses | Can be used in analog devices only. Best suited for audio and video transmission. | Best suited for Computing and digital electronics. |
| Applications | Thermometer | PCs, PDAs |
Zahid Bhuiyan
Dhaka International University
Roll: 28
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