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).