Information in a digital communication system is the meaningful data that is transmitted from a sender to a receiver. It can take various forms, such as text, images, audio, or video, and is represented in binary code (0s and 1s) for transmission.
Here's a breakdown of information in a digital communication system:
1. Representation:
- Binary Code: Digital information is encoded as binary digits (bits), where 0 represents a low voltage and 1 represents a high voltage.
- Data Units: Bits are grouped into larger units like bytes (8 bits) and kilobytes (1024 bytes) to represent more complex information.
2. Transmission:
- Modulation: Information is modulated onto a carrier signal (like radio waves) for transmission through the communication channel.
- Encoding: Different encoding schemes (like ASCII, Unicode) are used to translate information into binary code for transmission.
3. Reception:
- Demodulation: The received signal is demodulated to extract the original information from the carrier signal.
- Decoding: The binary code is decoded back into its original format (text, image, etc.) for the receiver to understand.
4. Examples:
- Text Message: A text message you send is encoded as ASCII characters and transmitted as binary code.
- Streaming Music: Audio data is converted into digital signals and streamed over the internet as a series of binary packets.
- Video Call: Video data is compressed and transmitted as binary code, allowing you to see the other person on your screen.
In essence, information in a digital communication system is the meaningful data that is transformed into binary code for transmission and then decoded back into its original format at the receiving end.
