A.时序电路输出与输入之间存在反馈,组合电路则没有
B.时序电路必包含组合电路
C.时序电路具有记忆功能,组合电路则没有
D.时序电路中必含有记忆元件,组合电路则不含记忆元件
第1题
S1 | bar{S_2}+bar{S_3} | A2 | A1 | A0 | bar{Y}_0 | bar{Y}_1 | bar{Y}_2 | bar{Y}_3 | bar{Y}_4 | bar{Y}_5 | bar{Y}_6 | bar{Y}_7 |
0 | × | × | × | × | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
× | 1 | × | × | × | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
1 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 |
1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 |
1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 |
1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 |
1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 |
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