UNIVERSITY OF MADRAS
B.Sc. DEGREE COURSE IN ELECTRONICS SCIENCE
SEMESTER SYSTEM WITH CREDITS
(Effective from the Academic Year 2003-2004)

Semester IV - Paper VIII - Digital Electronics

Duration: 3 hrs
Maximum Marks: 100
Credits: 4

Unit-1

Number Systems and Codes Decimal, binary, octal, hex numbers, conversion from one to another- codes, BCD, excess 3 , gray codes conversion from one to another - Error detection codes.

Unit-2

Boolean Algebra and Theorems : Basic, Universal logic gates - Boolean theorems - sum of products , products of sums expressions , simplification by Karnaugh Map method, simplification based on basic Boolean theorems - don't care conditions.

Unit-3

Combinational Digital Circuits Arithmetic Building blocks , Basic Adders and subtractors, BCD adders - Data of processing circuits, multiplexers, demulitiplexers, encoders, decoders - TTL, CMOS digital logic families.

Unit-4

Sequential Digital Circuits : Flip-flops , RS, Clocked SR, JK, D, T, master-slave types- shift registers, ring counters - ripple counters - synchronous counters, timer IC 555, applications.

Unit-5

DAC and ADC : Parameters, Accuracy, resolution - DAC, variable resister network, R-2R ladder network types - ADC, counting continuous, successive approximation, dual - slope types - comparison of various types of DAC and ADC.

Books for study and reference

1. Digital principles and applications by Malvino and Leach , McGraw Hill, 1996 IV Edition.
2. Micro Electronics by J.Milman, McGraw Hill International Book Company, New Delhi 1990 Edition.