This eleventh edition of Digital Fundamentals continues a long tradition of presenting a strong foundation in the core fundamentals of digital technology. This text provides basic concepts reinforced by plentiful illustrations, examples, exercises, and applications. Applied Logic features, Implementation features, troubleshooting sections, programmable logic and PLD programming, integrated circuit technologies, and the special topics of signal conversion and processing, data transmission, and data processing and control are included in addition to the core fundamentals. New topics and features have been added to this edition, and many other topics have been enhanced. The approach used in Digital Fundamentals allows students to master the all-important fundamental concepts before getting into more advanced or optional topics. The range of topics provides the flexibility to accommodate a variety of program requirements. For example, some of the design-oriented or application-oriented topics may not be appropriate in some courses. Some programs may not cover programmable logic and PLD programming, while others may not have time to include data transmission or data processing. Also, some programs may not cover the details of "inside-the-chip" circuitry.