Table 1 This table shows the expected bit values for a simple one bit subtraction
One Bit Subtraction and Carry | ||||
|---|---|---|---|---|
Carry | Q1 | Q2 | Result | New Carry |
0 | 0 | 0 | 0 | 0 |
0 | 0 | 1 | 1 | 1 |
0 | 1 | 0 | 1 | 0 |
0 | 1 | 1 | 0 | 0 |
1 | 0 | 0 | 1 | 1 |
1 | 0 | 1 | 0 | 1 |
1 | 1 | 0 | 0 | 0 |
1 | 1 | 1 | 1 | 1 |
One Bit Subtraction and Carry | ||||
|---|---|---|---|---|
Carry | Q1 | Q2 | Result | New Carry |
0 | 0 | 0 | 0 | 0 |
0 | 0 | 1 | 1 | 1 |
0 | 1 | 0 | 1 | 0 |
0 | 1 | 1 | 0 | 0 |
1 | 0 | 0 | 1 | 1 |
1 | 0 | 1 | 0 | 1 |
1 | 1 | 0 | 0 | 0 |
1 | 1 | 1 | 1 | 1 |
BioData Mining