This book can be used for a one- or two-semester course in digital electronics and is intended for students of technology, computer science, or engineering programs. Although not mandatory, it is helpful if the student using this text has an understanding of, or is concurrently enrolled in, a basic electricity course. A laboratory component to provide hands-on reenforcement of the material presented in this book can be very helpful. Laboratory exercises can be developed by building, testing, debugging, and analyzing the operation of any of the examples or system design applications that are provided within the text. Chapter Organización Basically, the text can be divided into two halves: Chapters 1 to 8 cover basic digital logic and combinational logic, and Chapters 9 to 17 eover sequential logic and digital systems. Chapters 1 and 2 provide the procedures for converting between the various number systems and introduce the student to the electronic signáis and switches used in digital circuitry. Chapters 3 and 4 cover the basic logic gates and introduce the student to timing analysis and troubleshooting techniques. Chapter 5 shows how several of the basic gates can be connected together to form combinational logic. Boolean algebra, De Morgan's theorem and Karnaugh mapping are used to reduce the logic to its simplest form. Chapters 6, 7 and 8 discuss combinational logic used to provide more advanced functions like parity checking, arithmetic operations and code converting. The second half of this book begins with a discussion of the operating characteristics and specifications ofthe TTL and CMOS logic families (Chapter 9). Chapter 10 introduces flip-flops and the concept of sequential timing analysis. Chapter 11 makes the reader aware of the practical limitations of digital ICs and some common circuits that are used in later chapters to facilítate the use of medium-scale ICs. Chapters 12 and 13 expose the student to the operation and use of several common medium-scale ICs used to implement counter and shift register systems. Chapter 14 deals with oscillator and timing circuits built with digital ICs and with the 555 timer IC. Chapter 15 teaches the theory behind analog and digital conversión schemes and the practical implementation ofADC and DAC IC converters. Chapter 16 covers memory and microprocessor bus concepts and then uses memory ICs and programmable logic to implement several system designs. Chapter 17 introduces microprocessor hardware and software to form a bridge between digital electronics and a follow-up course in microprocessors. The book concludes with several Appendices used to supplement the chapter material. Iftime constraints oniy allow for a single-semester course, then the following sections shouid be covered to provide a coherent overview of digital electronics: Sections 1.1-1.5, 1.8-1.13 Sections 2.1-2.2 Sections 3.1-3.3, 3.5-3.6 Sections 4.1-4.3, 4.5-4.6 Sections 5.1-5.4 Sections 6.1-6.2 Sections 9.1-9.2 Sections 10.1-10.8 Sections 12.1-12.6 Sections 13.1-13.6 Sections 15.1, 15.5, 15.6, 15.10 Sections 16.1, 16.2, 16.4 Aiso, if the course is intended for nonelectrical technology students, then the following sections couid be omitted to eliminate any basic electricity requirements: Sections 2.6-2.8 Sections 9.1-9.3, 9.8 Sections 11.3-11.6 Sections 14.2-14.4 Sections 15.2-15.4, 15.12