2.5.1 Complementary MOS Circuits2.5.2 Voltage Levels and Loading2.5.3 Three-state Outputs2.5.4 Signal Propagation in CMOS2.5.5 Electrostatic Precautions and ESD Protection2.5.6 Switch Debouncing2.5.7 Power Supply Regulation2.5.8 Metastability Characteristics