UEI301 DIGITAL
ELECTRONICS 


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Prerequisite(s): None 




Introduction: Difference between analog
and digital systems, Advantages and Disadvantages of digital system.
Number Systems: Introduction, Number
systems: Decimal, Binary, Octal, Hexadecimal; Conversions; Representation of
Signed Numbers, Sign magnitude, 1’s complement, 2’s complement, r’s complement;
Binary Arithmetic – addition, subtraction, multiplication and division, Binary
codes: Weighted and nonweighted codes, Sequential codes, Selfcomplementing
codes, Excess3 code, Gray code, Errordetecting codes, Errorcorrecting codes,
Hamming code, Alphanumeric codes.
Minimization
Techniques: Introduction, Boolean
Algebra: Laws and Theorems, Demorgan’s Theorem, Simplification of Boolean
functions by Boolean algebra, Kmap method and QuineMcClusky method in SOP and POS forms, Advantages and disadvantages of
different minimization techniques.
Combinational Circuits: Introduction, Logic Gates: Basic gates,
Universal gates, Derivation of other gates from universal gates, Half adder,
Full adder, Parallel Binary adder, Serial adder, BCD adder, Half and full
subtractor, Binary multiplier, Dividers, ALU, Code converters, Magnitude
comparators, Parity Generators/checkers, Encoders, Priority encoder, Decoders,
Multiplexers, Multiplexer as function generator, Demultiplexer.
Sequential Circuits: Introduction, Flipflops: Types, Their conversions
and applications, Registers: Serial/Parallel in/out, Bidirectional, Universal shift register, Counters:
Synchronous, Asynchronous, Decade, Binary, Modulon, Shift register counters;
Design of Synchronous sequential circuits.
Memories: Introduction and classification of ROM, ROM
organization, Static and Dynamic RAM, DRAM Refreshing, Representative circuits
for cells using BJT and FET’s, Timing diagrams of memories, Memory
expansion using IC’s, Flash memory, CCD, Magnetic Memories.
Logic circuits: Introduction, Specification terminology: Fan out,
Unit load, Current and voltage parameters; TTL, ECL, MOS, CMOS logic families
and their comparison, Tristate Logic, Interfacing of TTL and CMOS logic
families.
Converters: Digital to Analog conversion, R2R ladder DAC, Weighted Resistor DAC, AnalogtoDigital (A/D or ADC) conversion, Flash type, Counter type ADC,
Dualslope ADC, Successive approximation type ADC.
Laboratory work
To consider various important codes and the
logic for converting from one to another, 74146, 7476, 7483, 7485, 7490, 7492,
7495, 74121, 74123, 74126, 74151, 74163, 74180, 74181, 74190, 74192, 74195,
74196, Shift register and binary counting using JK flip flop,
asynchronous/synchronous up/down counters, Variable modulus counters, Usage of
IC tester, Computer simulation using EDA tools.
Text Books
Reference book