Design a calculator circuit which can perform either addition or subtraction on a 4-digit binary input and generate a 5-digit bi
nary output. Your circuit should let the user decide if the operation should be addition or subtraction. Note: you can re-use your parallel adder and parallel subtractor circuits. (20 points)
Explanation: This is because of the mixture of material used and the number of directions it causes strain I directly proportional to the number of times it causes stress.