A NAND gate can of course be realized by adding M2 and R3 to form an output inverter. Figure 3 Two-input NAND gate (a), and MOSFET realization (b) For a more analog MOSFET application, consider this ...

Simple touch switch circuit with 4011 – source. The circuit as you can see from its diagram is very simple and only uses 8 components. ... U1 – 4011 CMOS NAND Gate IC; Touch Switch with 555 – source ...

The NAND gate is a circuit that outputs '0' when both inputs are '1', and '0' otherwise, so if you arrange the NAND gate as follows, the Invert circuit is completed.