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

SYLLABUS

Semester VI - Paper XI - Semiconductor Devices and Digital Electronics

Duration of Examination: 3 hrs
Maximum Marks: 100
Credits: 4

Unit I

Special devices:

Special semi conductor devices-Field Effect Transistor (FET), Uni-Junction Transistor (UJT), Silicon Controlled Rectifier (SCR) construction, characteristics and working - FET amplifier - UJT relaxation oscillator - Firing of SCR using UJT- SCR as a switch - SCR rectifier Photo diode and photo transistor - uses.

Unit II

Digital Electronics Fundamentals:

Number Systems - Conversion from one number system to another - Complements - BCD code - Binary logic - Logic gates - AND, OR NOT gates-Truth tables. Boolean Algebra - laws- Simplification of Boolean Functions - De Morgan's theorem-NAND , NOR gates - Universal building blocks.

Binary addition-subtraction-multiplication and division-subtraction by l's and 2's complement forms.

Unit III

Simplification of logic circuits:

Sum of products - Product of sums - Simplification of logic equations using Boolean algebra - Simplification by Karnaugh map - pairs, quads, octets - upto 4 - variables- Simplified circuit using NAND gates only-Product of sums.

Unit IV

Combinational circuits:

Half adder, full adder, half subtractor and full subtractor - 4-bit adder/subtractor. Decoder - Encoder - Multiplexer - Demultiplexer - PLA.

Unit V

Sequential logic circuits:

RS, D and 3K Flip-flops - 3K Master Slave flip flop - Shift Registers - Ripple Counters - BCD counter - Introduction to synchronous counters (design not required).

Books for Study:

1. Elements of Electronics by Bagde and Singh

2. Digital principle and applications by Malvino and Leach

Books for Reference:

1. Computer Architecture and Logic Design by T.C. Bartee, McGraw Hill, 1991.

2. Integrated Electronics by Millman and Halkias

3. Solid state elctronics by I.Agarwal and Anit Agarval

4. Digital integrated electronics by Herbert Taub and Donald Schilling, Mc. Hraw Hill