3EC3A DIGITAL ELECTRONICS (Common to EC & EIC) |
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| Units | Contents of the subjects |
| NUMBER SYSTEMS, BASIC LOGIC GATES & BOOLEAN ALGEBRA - Binary Arithmetic & Radix representation of different numbers. Sign & magnitude
representation, Fixed point representation, complement notation, various codes &
arithmetic in different codes & their inter conversion. Features of logic algebra,
postulates of Boolean algebra, Theorems of Boolean algebra. Boolean function.
Derived logic gates: Exclusive-OR, NAND, NOR gates, their block diagrams and
truth tables. Logic diagrams from Boolean expressions and vica-versa, Converting logic diagrams to universal logic. Positive, Negative and mixed logic, Logic gate conversion. |
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| DIGITAL LOGIC GATE CHARACTERISTICS - TTL logic gate characteristics. Theory & operation of TTL NAND gate circuitry. Open collector TTL. Three state output logic. TTL subfamilies. MOS & CMOS logic families, Realization of logic gates in RTL, DTL, ECL, C-MOS & MOSFET, Interfacing logic families to one another | |
| MINIMIZATION TECHNIQUES - Minterm, Maxterm, Karnaugh Map, K-map upto 4 variables, Simplification of logic functions with K-map, conversion of truth tables in POS and SOP form. Incomplete specified functions, Variable mapping. Quinn-Mc Klusky minimization techniques. | |
| COMBINATIONAL SYSTEMS - Combinational logic circuit design, half and full adder, subtractor. Binary serial and parallel adders. BCD adder. Binary multiplier. Decoder: Binary to Gray decoder, BCD to decimal, BCD to 7-segment decoder. Multiplexer, Demultiplexer, Encoder. Octal to binary, BCD to excess-3 encoder. Diode switching matrix. Design of logic circuits by multiplexers, encoders, decoders and demultiplexers. | |
| SEQUENTIAL SYSTEMS - Latches, Flip-flops, R-S, D, J-K, Master Slave flip flops. Conversions of flip-flops, Counters: Synchronous & Asynchronous ripple and decade counters, Modulus counter, Skipping state counter, Counter design, State diagrams and state reduction techniques, Ring counter, Counter applications, Registers: Buffer register, Shift register. | |
Text/References:
1. Digital integrated electronics, By Herbert Taub, Donald L. Schilling, TMH
2. Ghoshal – Digital Electronics, Cengage Learning
3. Roth – Fundamentals of Logic design, Cengage learning
4. Digital Logic and Computer Design By M. Morris Mano, Pearson
5. Pulse Switching and Network By Millman Taub, TMH
6. Roth – Digital system design using VHDL, Cengage learning
7. Fundamentals of Digital circuits, A. Anand kumar, PHI
8. Digital Electronics, Jain and Agrawal, Genius publications
9. Leach, Digital Principles and Applications, TMH
10. Digital Electronics: Principles and Integrated Circuits, Maini, Wiley