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    The IC 74LS138 is a _________.
    Question

    The IC 74LS138 is a _________.

    A.

    8 bit subtractor

    B.

    8 line multiplexer

    C.

    8 line demultiplexer

    D.

    8 bit adder

    Correct option is C


    The IC 74LS138 is a 3-to-8 line decoder/demultiplexer. It takes a 3-bit binary input and activates one of its 8 output lines, depending on the combination of the inputs.
    Explanation:
    · It is commonly used as a demultiplexer because it routes the input signal to one of the eight output lines based on the binary input.
    · It is also used as a decoder for selecting one out of 8 outputs, often in memory or peripheral selection.

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