# Question: draw the diagram using block diagrams for adder and decoder...

###### Question details

Draw the diagram (using block diagrams for adder and decoder and logic gates for the logical unit) for a

simple 4-bit ALU that can compute the following:

(a) A and B and C and D

(b) A or B or C or D

(c) A + B + C + D

Develop a truth table to check the correctness for each component of your ALU.