Level signal control method and system and combined logic circuits

摘要: The invention provides a level signal control method and system combined logic circuits. comprises the following steps of: one or more circuits obtaining input signals respectively determining types of signals; circuits, according to signals, controlling working states P-channel switch Q1, i.e., PMOSs (Q1), Q2, (Q2) in It is realized that two are subjected overturning twice, thereby ensuring output consistent with level.