Design a 2-bit serial-carry parallel adder circuit, run the virtual experiment system, and get the experimental circuit shown in Figure 1 according to the following logic equation.
Logic equation:
s1=A1⊕B1⊕C1
c2=A1B1+B1C1+C1A1
s2=A2⊕B2⊕C2
C3 = A2B2 + B2C2 + C2A2
Figure 1 Design circuit diagram of two-bit full adder
- Turn on the power switch, set the data switch according to the input signal in Table 1, and list the corresponding output value in 1.
Table 1 Truth table of 2-bit serial carry parallel adder
| enter |
output |
||||||
| A2 |
A1 |
B2 |
B1 |
C1 |
S2 |
S1 |
C3 |
| 0 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
| 0 |
1 |
0 |
1 |
1 |
1 |
1 |
0 |
| 1 |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
| 1 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
| 1 |
0 |
1 |
1 |
0 |
0 |
1 |
1 |
| 1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
The screenshot of the output value corresponding to the input result in Table 1 is shown in the figure below.
Input 00110 output result
Input 00111 to output the result