Telecommunication, Network & Internet



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DCN introduction

Introduction

  • Dr. John Sum
  • Institute of Electronic Commerce
  • National Chung Hsing University

Communications

  • Communications
    • The message (data and information) is communicated via the signal. The transmission medium “carries” the signal.

Telecommunications

  • Telecommunications
    • The electronic transmission of signals for communications, including such means as:
      • Telephone
      • Radio
      • Television
  • Telecommunication medium
  • Anything that carries an electronic signal and interfaces between a sending device and a receiving device.

Data Communications

  • Data communications
    • A specialized subset of telecommunications that refers to the electronic collection, processing, and distribution of data -- typically between computer system hardware devices.

Data Communications


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