Data Transmission and Interfaces

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????? 3 ???????????????? ?????????????????

• Data Transmission and Interfaces

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Fundamental of Data and Signals

• ?????????????????? Physical Layer
• ????????????????????????????????
• Digital (binary)? ???????????????????
• ????????????????????????????????????????
• ?????????????????????? ???????????
  ??????????????????
• ?????? VS ??????
• ?????? ?????????????????
• ?????? ????????????????????? ?????????????????????
  ?????????????????????

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Digital Signal and Analog Signal

• ?????????????? ????????????????

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Analog Signal

• ??????????????????????????????????????????????????
  ? --gt ???????? ????? ?????? ???
• ?????????????????????????????????????????????
  (Continuous Waveforms)
• ????????????????????????????????????????
• ????????????????????????????? (Amplifier)

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Digital Signal

• ????????????????????????? (Discrete /
  Discontinuous)
• ?????????????????????????????????????? Positive
  (,0) / Negative (-,1)
• ????? ??? ?????????????, ???????????????????
• ??????? ??? ??????????????????????
• ?????????? (Repeater) ??? ????????????????
  ????????????????????????????????????

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?????????????????????/????????????????????

• Analog Data to Analog Signal
• Digital Data to Digital Signal
• Digital Data to to Analog Signal
• Analog Data to Digital Signal

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Analog Data to Analog Signal

• ?????????? ????????? ???? ????????????????????
• Carrier Signal
• Modulation
• Demodulation

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????????????????? (Amplitude Modulation AM)
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???????????????????? (Frequency Modulation AM)
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Digital Data to Digital Signal
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Digital Data to to Analog Signal
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Analog Data to Digital Signal

• ????????????????????? ????? (Codec
  Coder/Decoder)
• ????????? Voice Digitization

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(No Transcript)
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Digital Data Transmission
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Parallel Transmission
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Serial Transmission
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• UART (Universal Asynchronous Receiver
  Transmitter)
• USART (Universal Synchronous / Asynchronous
  Receiver Transmitter)

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Asynchronous Transmission
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Synchronous Transmission
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• Simplex

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• Half-Duplex

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• Full-Duplex