Experiments in DIGITAL ELECTRONICS

Digital electronics circuits are the engines of cell phones, MPEG players, digital cameras, computers, data servers, personal digital devices, GPS displays, and many other consumer products that process and use information in a digital format. This experimental book elaborates on basic theories and experimental hands-on treatment of digital circuit design. This experimental book is suitable not only for basic theoretical concepts but also for laboratory work for B.E/B.Tech. Degree courses in Electrical/Electronics/computer-related disciplines, Diploma courses in Electrical/Electronics/computer-related disciplines, and postgraduate degree courses (M.Sc.) in Electronics and Master in Computer Application
This book covers most of the experiments in digital electronics. The digital circuits can be designed and constructed using standard digital integrated circuits (ICs) mounted on protoboards / breadboards easily assembled in the laboratory. In this book, a summary of the experiments is covered in nine sections. The brief theory given for each experiment is sufficient for students to understand an experiment and benefit from it. The lab experiments can be used in a stand-alone manner and can be accomplished by the traditional approach, with a protoboard / breadboard and TTL circuits. The operation of the integrated circuits used in the experiments is explained by referring to a diagram of similar components introduced in the experiments. Each experiment is presented informally, and the student is expected to produce a circuit diagram and formulate a procedure for verifying the operation of the circuits in the laboratory. Before going to the experimental work, this book provides the introductory part of the digital lab components, precautions for handling IC’s, testing, troubleshooting, safety measures used in the laboratory, etc. This book contains nine sections of the experiments.
The first section deals with the experiments on Digital Logic Gates. This includes verifying the operation of basic gates, universal gates, exclusive-OR, and exclusive-NOR using ICs. The use of one input as a data control means enables/inhibits gates. The expanding gate input technique of the gate has lower input gate ICs. The second section deals with the experiments on the use of Universal Gates in digital logic circuits. Here we can verify the operation of all gates using universal gates.
The third section is experiments based on the Simplification of Boolean Functions. Verify Boolean laws, De-Morgan’s and the duality theorems. Designing a circuit with universal gates that implement the given Boolean functions is also a part of this section. The fourth to sixth sections deal with Combinational Logic Circuits, consisting of the design of combinational circuits (adder/subtraction, code converters, IC Comparator, even/odd-parity bit, and data processing circuits). The seventh to ninth sections outline the formal procedure for the design of Sequential Circuits. Beginning with crossed NAND/NOR and progressing through gated, transparent data, master-slave, JK Flip-Flop and T flip-flop and their inter conversion between one flip-flop to another. Secondly, the applications of flip-flops are shift registers, universal shift register, ring counter, Johnson counter, serial adder, asynchronous binary counter, decade counter, and synchronous binary counter.
Appendix-A contains the standard graphic symbol for logic functions recommended by an the ANSI/IEC standard. Appendix-B contains the circuits used in the digital laboratory. Appendix-C contains a brief description of the Digital ICs (TTL) used in the laboratory and Appendix-D contains the bibliography.
We hope that this Practical Book provides a booster for students to enhance their practical knowledge and have a thorough understanding of the concepts, principles, and procedures involved in it.