Download Digital Principles and Logic Design by Arijit Saha PDF

By Arijit Saha

This text/reference offers scholars and working towards engineers with an creation to the classical equipment of designing electric circuits, yet contains glossy good judgment layout ideas utilized in the newest microprocessors, microcontrollers, microcomputers, and diverse LSI parts. The ebook presents a evaluate of the classical tools e.g., the fundamental thoughts of Boolean algebra, combinational good judgment and sequential good judgment approaches, sooner than conducting the sensible layout strategy and using computer-aided instruments. The ebook is enriched with quite a few examples (and their solutions), over 500 illustrations, and encompasses a CD-ROM with simulations, extra figures, and 3rd social gathering software program to demonstrate the thoughts mentioned within the publication. good points * Designed as a text/reference to supply scholars and practising engineers with info on either classical tools and glossy functions * sleek functions are mentioned intimately, together with Karnaugh maps, PLD notation (PAL, PLA, FPGA) and extra * Covers basic issues as Boolean algebra, good judgment gates, flip-flops, minimization, and so on. * CD-ROM comprises simulations, figures, and third-party software program short desk OF CONTENTS 1. information & quantity platforms. 2. Codes and Conversions. three. Boolean Algebra & good judgment Gates. four. Simplification of Boolean capabilities. five. Combinational common sense Circuits. 6. Programmable good judgment units. 7. Sequential common sense Circuits. eight. Registries. nine. Counters. 10. A/D and D/A Conversion. eleven. common sense households. Appendix. word list. in regards to the CD-ROM. Index.

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5 Alphanumeric Codes Many applications of the computer require not only handling of numbers, but also of letters. To represent letters it is necessary to have a binary code for the alphabet. In addition, the same binary code must represent the decimal numbers and some other special characters. An alphanumeric code is a binary code of a group of elements consisting of ten decimal digits, the 26 letters of the alphabet (both in uppercase and lowercase), and a certain number of special symbols such as #, /, &, %, etc.

For the different alphanumeric characters the code grouping in this code is different from the ASCII code. It is actually an 8-bit code and a ninth bit is added as the parity bit. Hollerith Code Generally this code is used in punched cards. A punched card consists of 12 rows and 80 columns. An alphanumeric character is represented by each column of 12 bits each by punching holes in the appropriate rows. The presence of a hole represents a 1 and its absence indicates 0. The 12 rows are marked starting from the top, as 12, 11, 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.

1 0 1 1 1 1 † 0 1 1 1 Binary Gray Perform the ex-OR between the fourth and the fifth bits of the binary. The result is 1, which is the fifth bit of the Gray code. 1 0 1 0 1 1 1 1 † 1 1 1 Binary Gray Perform the ex-OR between the fifth and the sixth bits of the binary. The result is 0, which is the last bit of the Gray code. 1 0 1 0 1 1 1 1 1 1 † 1 Binary 0 Gray After completing the conversion the Gray code of binary 101011 is 111110. 6. Convert (564)10 into Gray code. Solution. Step 1. Convert the decimal 564 into equivalent binary.

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