1. Design a BCD to Excess-3 code converter circuit. (Note: Take inputs as First 4 letters of your name and outputs and First 4 letters of your father's name.) [1] 2. Design a 4-bit binary code to gray code converter circuit. (Note: Take inputs as First 4 letters of your father's name and outputs and First 4 letters of grandfather's name.) [1] 3. i. Draw the truth table of full substractor circuit. [0.25] ii. Design this circuit using PLA. [0.75] (Note: Take inputs as First 3 letters of your name and outputs and First 2 letters of your grandfather's name.)