Digital Electronics And Logic Design

Digital Electronics And Logic Design

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Number Systems and CodesIntroduction, Binary number system, Binary to decimal conversion and vice versa, signed binary numbers: Sign-Magnitude representation, One s and two s complement representation, Binary arithmetic, 2 s complement arithmetic, Hexadecimal numbers, Octal numbers, BCD code, Excess-3 code, Gray code. Error detecting and correcting codes BOOLEAN ALGEBRA: Axiomatic definition of Boolean algebra, Basic theorems and propertiesLogic FamiliesCharacteristics of digital ICs: Speed, Power dissipation, fan-out, current and voltage parameters, noise margin, operating temperature etc., TTL: Operation of TTL NAND gate, Standard TTL, TTL Characteristics, Active pull-up, Wired-AND, totem pole, open collector, Unconnected Inputs. CMOS Logic: CMOS Inverter, CMOS NAND and NOR, CMOS characteristics. Wired-logic, Unconnected Inputs, Open-drain outputs, Comparison of TTL and CMOS, interfacing TTL to CMOS and vice versa, tri-state logic: tri-state buffers, inverters, Study of Data sheets of 7400 Series ICs: (Basic and Universal logic gates)Combinational Logic Introduction, Standard representations for logical functions: K-Map: Representation of truth-table, SOP form, POS form, Simplification of logical functions, Minimization of SOP and POS forms, Don t care conditions, Design examples: Arithmetic circuits, BCD-to-7-segment decoder etc. Minimization using Quine McClusky method (upto 4 variables only)Design Using MSI circuits: Half adder and subtractor, full adder and subtractor, BCD adder and subtractor, look ahead and carry, ALU 74181, code converters, parity generator and checker, magnitude comparator, multiplexers, demultiplexers, decoders, 7485, 74138, Priority encodersSequential Logic Flip-Flops: Introduction, 1-Bit memory cell, Clocked S-R flip-flop, JK flip flop: Race-around condition, Master slave JK flip-flop, D flip-flop and T flip-flop, Edge-triggered flip-flops, Applications of flip-flops: Bounce-elimination switch, registers, counters and Random access memorySequential Logic design: Introduction, Registers and shift registers, applications of shift registers: Serial-to-Parallel, Parallel-to-Serial, ring counters, Sequence generator and detector, Ripple counters: Up-Down, Modulus of the counter, Synchronous counters.Study of ICs-7473, 7474, 7476, 7490, 74192, 74194, 74373Algorithmic State Machines ASM charts, notations, design of simple controller, multiplexer controller method, RTL notations and implementation. Introduction to VHDL: Entity and Architecture, Introduction to modeling styles, Configuration declaration and important data objects and examples of VHDL codes for simple digital circuitsProgrammable Logic DevicesProgrammable logic array: Input, Output buffers, AND, OR, Invert/non-Invert matrix, Programming the PLA, Applications of PLAs to implement combinational and sequential logic circuitsProgrammable array logic: Registered PALs, Configurable PALs, Generic array logic devices, EX-OR PALs and simple PLDsComplex programmable logic devices (CPLD): Introduction, Block diagram. (XC 9500).Introduction to Field - Programmable gate array (FPGA) XC 4000, Introduction to ASICExample 10.7 : Design a mod-12 Up counter using 74193 1C. Solution : This can be done in two ... P2 P3 TC IC74193 MR Q0 Q1 Q2 Q3 PL +v cc ArM^ Example 10.8 : Draw the timing diagram for 1C74193 showing all signals. Solution : Fig.

Title:Digital Electronics And Logic Design
Author:D.A.Godse A.P.Godse
Publisher:Technical Publications - 2007-01-01


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