Subject

    Computer Science

    Topic

    Computer Hardware

    A COM port is a ______ port.

    a)
    parallel
    b)
    serial
    c)
    static
    d)
    multi

    Explanation

    PC COM ports implement RS-232 serial signaling. They send data one bit at a time over TX/RX lines. Parallel ports (LPT) move a whole byte at once and use different connectors.

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