The real-world signals are analog. However, processing, communicating, and storing data in digital form is advantageous over analog form. Therefore, the analog signal is converted to digital form at the transmitter end and again converted back to analog form at the receiver end. The following are multiple advantages of digital over analog.
- Efficient processing and reliable transmission
- Easier storage of data
- Higher accuracy and clarity
- Speed
- Programmability
- Noise immunity
- Reproducibility of results
- Ease of fabrication in integrated circuit form
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