Can you please answer all questions

COMP-3043 FALL 2017 Quiz #2 1. [10 points] Use a truth table to show that P (PANDO) OR (P AND NOT Q) = 2. [10 points] A common chip is a 4-bit adder. Four of these chips can be hooked up to form a 16-bit adder. How many pins would you expect the 4-bit adder chip to have? Why? 3. [50 points] The following questions are all related to the design of a full 1-bit subtractor, which has three inputs: bit A, bit B, carry-in bit C (which is the borrowing-bit from lower position), and two outputs: result bit R, and carry-out bit K. Here R A-B-C. The following is the truth table for this subtractor 1) Complete the truth table for this subtractor CRK