Anonymous
Anonymous asked in Computers & InternetComputer Networking · 1 month ago

Why is it called half-duplex?

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  • 1 month ago
    Favourite answer

    As far as I can tell, the terms 'simplex', 'half-duplex', and 'full duplex' originated with the Western Union Telegram company.

    I'm not sure how they came up with the terms, but 'simplex' refers to a system that can send data, but not receive (like a radio station), 'half-duplex' is a system that can send and receive - but only one at a time (like a two-way radio), and 'full-duplex' allows simultaneously two-way communication (telephone).

  • Lv 7
    1 month ago

    because it does half of what full duplex does:

    https://en.m.wikipedia.org/wiki/Duplex_(telecommun...

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