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Question: construct a 3to8 line decoder with an enable input e...

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CONSTRUCT A 3-TO-8 LINE DECODER WITH AN ENABLE INPUT e USING 2-TO-4 LINE DECODERS WITH ENABLE INPUT AS ITS BASIC BUILDING BLOCK. SHOW CLEARLY THE FOLLOWING:

a.) THE CIRCUIT IN BLOCK DIAGRAM FORM (CLEARLY LABEL EVERYTHING)

NOTE:                   

For input signal variables, use A, B, C, etc…      

For output signal variables, use Z0, Z1, Z2, Z3, ETC…

For input/output ports, use A,B,…/0,1,….. respectively

b. ) TRUTH TABLE FOR THE CIRCUIT CONCERNED.

NOTE: The truth table must conform with the operation of your circuit in Problem 2(a).

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