Pay attention to the transistor polarities, and draw them correctly. It looks like Q1 and Q2 should be P channel, and Q3 and Q4 N channel. ... <看更多>

Figure 12.1 NAND and NOR gate circuits and logic symbols. L\ +Z,2 = 2L« ... three-input NAND gate using 10/1 devices in the long-channel CMOS process. ... <看更多>