Design a Binary coded decimal (BCD) to excess-4 code converter according to the following specifications. The code converter takes in the BCD number and adds the binary value-4 to it to produce the corresponding excess-4 code. Provide answers to the following questions:

a. Looking at the level 0 design, identify the number of inputs going into the block and the number of outputs from the block (2.5)

b. Provide the truth table for this circuit. (Truth table doesn't need to be typed in here, it may be worked out in the paper and submitted) 5 points.

c. Obtain the simplest implementation of this code converter through the use of K-maps. Here, provide the simplified function expression for each of the outputs of the code converter you have obtained through K-map simplification (10 points)

d. Show the circuit implementation of each of the outputs (5 points)