This work emphasizes the anlaysis and performance comparison of different gate-level logic circuits, and presents design examples based on logic-level requirements. Coverage includes the history of logic families, as well as current developments like BiMOS, PALS and FPLAs. The implementation of logic gates using different configurations of MOS devices is examined, and the analysis of digital IC families is extended to include the more recent BiMOS and GaAS technologies. Other topics include regeneration logic circuits, popular methods of analog-digital data conversions, and LDI and VLSI systems with memories and gate arrays.