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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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