Simple 2 bit adder with carry

This will add two bits and carry the remainder. D0 | D1 | Cin | Q0 | Cout 0 | 0 | 0 | 0 | 0 0 | 1 | 0 | 1 | 0 1 | 0 | 0 | 1 | 0 1 | 1 | 0 | 0 | 1 0 | 0 | 1 | 0 | 1 0 | 1 | 1 | 0 | 1 1 | 0 | 1 | 0 | 1 1 | 1 | 1 | 1 | 1