With the advent of microelectronics, modern man has been appearing before an endless series wonders considered impossible a few decades ago. The digital electronic clock has been moving the mechanical watch market and is considered a near future delete it completely. Electronic calculator has been perfected to such a degree that a pocket calculator can perform mathematical operations that the first computers of the war (WWII) could not carry out, in addition to occupying entire buildings. Satellite communications have become a practical reality. The tone-dial telephone that displaced the mechanical rotary phone, cell phone and the automated telephone service long distance previously required dedicated operator also appeared together. In industry, the plants which process is electronically controlled by computers are now an absolute necessity. There are countless examples that could fill volumes.
Current developments promise for the future products as amazing as the automatic medical diagnosis, car electronic computer-controlled electronic vision for the blind and machines with artificial intelligence, to name only a few.
All this has been the product of intense and dedicated work of many scientists with a great vision for the future. This explosion technological revolution created with the continued development of the integrated circuit has come to create a large demand for technicians and engineers familiar with a new branch of electronics, Digital Logic, which provides the theoretical basis for the design of everything cited above.
Unfortunately, are not enough experts in this field to meet the large demand there is of them in industrialized countries. The problem is even greater in developing nations. The lack of teaching materials unified, consistent with modern teaching techniques, has created a void difficult to fill that makes the study of this branch is still problematic for students in industrialized countries, who are constantly seeking to reconcile the abstract theories learned in school with the vast differences found in practice.
In an effort to fill this large void, comes out this work with the hope of facilitating technological advancement of all peoples of Latin America.
This book contains over 150 fully solved problems. The core of the book is precisely these problems solved. A technician who can learn either with the help of a tutor or a teacher or self to solve all the problems of the book will be able to get their hands on almost any system built using digital circuits. The use of schematic drawings many places this book above many books published to date. It is the firm opinion of the author, contrary to many classic textbooks often have a lot of problems at the end of each chapter and the solutions never provide or if they do these solutions are relegated to the back of the book merely to of a few selected issues, suggested that every problem in a book must always be accompanied by a solution, otherwise the solution of the same by the student without answers against which to verify their results quickly overrides the enthusiasm at the beginning of a new course, become monotonous and boring.
logical symbols used in this book are in accordance with the standards imposed by the ASA Y32.14-1962 specifications of the American Standard Graphic Symbols for Logic Diagrams (also known as military standard MIL-STD-806B), whose use is now adopted by the industry in general, not only in America but worldwide.
Prevented the most logical use of "negative", since this tends to create confusion even in the most experienced engineers and technicians. It has also been virtually eliminated in this work use advanced mathematics, since they have to unnecessarily increase the complexity of the matter. Is considered here that the use of Boolean algebra (which is relatively easy to learn compared to the classical algebra is taught in middle schools) is sufficient to analyze the behavior of logic circuits, which can be checked Through this work. Topics such as Venn diagrams, the union and intersection of sets, to name a few, have been completely avoided, and there is evidence that their use, although it provides another way to study the behavior of logic circuits have extremely limited use for practical analysis of the same in the field.
For the clarity with which describes the material contained herein is considered that this work will be useful not only for students of engineering and technological institutes and universities in Latin America eager to understand the basics of this new branch of electronics . For teachers of the matter is a source of review material and examples to develop in class. To the student is a source of information that may be useful for the rest of his life. For the practical engineer is an extremely varied and valuable collection of circuits used with great frequency in the industry. For the self-taught this work may be a necessity.
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