Question

4 bit Adder circuit and 4 bit subtractor circuit concepts​

Answer 1

The operation of adding two binary numbers is one of the fundamental tasks performed by a digital computer. The four basic addition operations are 0 + 0 = 0, 1 + 0 = 1, 0 + 1 = 1 and 1 + 1 = 10. In the first three operations, each binary addition gives sum as one bit , i.e. , either 0 or 1.