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Encoder
The encoder is a logic circuit which provides the binary code is output for each input each input signal. In other words we can say that it performs just opposite function of a decoder. Th eblock diagram logic diagram and truth table of an 8 to 3 encoder ( 74LSI 148) is shown in the fig.
Figure 8 to 3 Encoder
The output lines Gs an E0 can be used for cascading devices to encode more than eight inputs.
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