As we have already mentioned that at a time only a single input gets activated. We know in case 4 of input lines the applied input bits will be 00, 01, 10, 11 denoting the input lines I 0, I 1, I 2, I 3. Let us see the operation of 4:2 binary encoder in detail. Hence it is said to be 4:2 encoder, because of having 4 input lines and 2 output lines. Here 4 input lines are present and for 4 input lines, by the relation 2 n, the number of output must be 2. The figure below represents 4:2 binary encoder: So, let us understand how a 4:2 binary encoder operates. 4:2 Binary EncoderĪs we have recently discussed the relation between input and output data lines. Thus less number of data lines are required by encoded data to get transmitted from an end to another. Suppose for an encoder the number of input lines is 2 n then the output lines will be n. And the logic circuitry present inside the encoder converts this active signal into coded binary format. In binary encoders among all the input lines, only a single input line gets activated at a time.
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