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Digital signal and wave form

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Digital Signal:

  • A digital signal is a representation of information using discrete values, typically in binary code (0's and 1's).
  • They have distinct levels or states, allowing for precise representation of data.
  • Commonly used in digital communication, computers and electronic devices for transmitting and processing information.
  • Digital signals are less susceptible to noise during transmission, making them reliable.
  • Example: Binary-coded messages, digital audio data transmitted over the internet are all examples of digital signals.

Digital Waveform:

  • Digital waveform consist of voltage levels that are changing back and forth between the HIGH and LOW level as states.
  • A waveform, on the other hand, is a graphical representation of a signal's amplitude as it varies with time.
  • It shows how the amplitude of the signal changes over a specific period.
  • Waveforms can be associated with both analog and digital signals.
  • It used in signal processing, audio analysis and the study of electronic signals.
  • The shape and characteristics of a waveform convey information about the signal, such as frequency, amplitude and phase.

Advantage of digital signal over Analog signal:

  • Digital data can be processed and transmitted more efficiently.
  • It can be easily manipulated, analyzed and processed by digital devices.
  • It can store hug amount of data at lesser space data with least chance of error.
  • Noise does not affect digital data as compared to analog signals.
  • Compact storage and application of compression techniques for efficient data storage.
  • Capable of encryption for enhanced security during transmission.
  • Represent information with high precision and accuracy.

Disadvantage of digital signal:

  • Digital systems can be complex, leading to higher costs.
  • Conversion introduces errors due to discreate representation.
  • Digital signals may require more bandwidth than analog.
  • Processing can introduce delays, critical in real-time application.
  • Certain data types may still require significant storage space.
  • Digital device can consume more power.
  • Digital systems are susceptible to cyber threats.

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