It discusses the basic principles involved in the design and application of COS/MOS digital integrated circuits, and describes many of the circuit building blocks, ranging from basic NOR and NAND gaies to complex phase-locked loops and rate multipliers. 

COS/MOS made possible orders-of-magnitude reduction in the power consumption of digital logic circuits. Perhaps the most dramatic demonstration of the potential of this new technology was the development, in 1970, of a totally new consumer product - the digital wrist watch. Battery-powered and quartz-crystal-controlled, this watch was an achievement in accuracy and compactness made possible only by COS/MOS integrated-circuit technology.