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Digital signals may be divided into two categories:
  • Some are inherently both discrete and quantized (ex. the number of people who visit a certain establishment every day).

  • Some describe phenomena that are actually continuous in one way or another. The signal must be discretized, quantized, or both, in order to make it digital. This " Digitization " is required if the signal is to be processed in a Computer or other Digital Device .


Because of the Digital Revolution , the usage of digital signals has increased significantly.
Most household electronic devices are based entirely or almost entirely upon digital signals. The entire Internet is a network of digital signals, as is modern Mobile Phone communication.

In most applications, digital signals are represented as Binary Number s, so their quantization is measured in Bit s.


COMPUTER ARCHITECTURE