CPA cont. #
Design a 1-bit full adder #
Ax |
Bx |
C-in |
Sx |
C-out |
---|---|---|---|---|
0 | 0 | 0 | 0 | 0 |
0 | 0 | 1 | 1 | 0 |
0 | 1 | 0 | 1 | 0 |
0 | 1 | 1 | 0 | 1 |
1 | 0 | 0 | 1 | 0 |
1 | 0 | 1 | 0 | 1 |
1 | 1 | 0 | 0 | 1 |
1 | 1 | 1 | 1 | 1 |
We can reduce the diagonals in Sx
: note that Sx
is true if only 1 of the inputs is on, or all are on (this is XOR).