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接下来Encoder,bigger数字的优先级更大。如果初始状态是0,经过多少clock pulse,Q after being 1,改变状态到zero。
Encoder
bigger
0
clock pulse
Q after being 1
zero
我的教授,说(3),为什么?
初始状态: Q = 0, D1D0 = 00, Q' = 1, JK = 00编码器输入:0001
Q = 0, D1D0 = 00, Q' = 1, JK = 00
0001
在第一个时钟脉冲之后,
D1D0 = 01 编码器输入:0011所以JK =01重置输出Q = 0, Q' =1
D1D0 = 01
0011
JK =01
Q = 0, Q' =1
在第二个时钟脉冲之后,
D1D0 = 10编码器输入:0101 所以JK =10设置输出 Q = 1, Q' =0
D1D0 = 10
0101
JK =10
Q = 1, Q' =0
在第三个时钟脉冲之后,
D1D0 = 11编码器输入:1110所以JK = 11. 切换输出。
D1D0 = 11
1110
JK = 11
或Q从 切换1到0。
Q
1