a change in the state of the flip-flop can occur only at a clock pulse edge
B.
the state that the flip-flop goes to depends on the D input
C.
the output follows the input at each clock pulse
D.
all of these answers
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【简答题】请根据括号中的中文提示、英文释义或句意,写出句中所缺单词,使句子通顺。 小题1:Tom is __________ (缺席) from class today. His mum is ill, he has to look after her at home. 小题2:We should pay attention to ________ (grow and improve) a good hab...