Course Objectives:

1. To learn the principles of digital hardware and support given by it to the software.

2. To explain the operation and design of combinational and arithmetic logic circuits.

3. To design hardware for real world problems.



Design Concepts – Digital Hardware, Design process, Design of digital hardware Introduction to logic circuits – Variables and functions, Logic gates and networks. Boolean algebra, Synthesis using AND, OR, and NOT Gates, Design examples. Optimized implementation of logic functions – Karnaugh Map, Strategies for minimization, minimizing Product-of-Sum Forms, Incompletely Specified functions, multiple output circuits. NAND and NOR logic networks, Introduction to CAD tools and Very High Speed Integrated Circuit Hardware Description Language (VHDL).



Programmable logic devices: general structure of a Programmable Logic Array (PLA), gate level diagram, schematic diagram, Programmable Array Logic (PAL) Structure of CPLDs and FPGAs, 2-input and 3-input lookup tables (LUT). Design of Arithmetic- circuits, VHDL for Arithmetic-circuits Combinational circuit building blocks – Multiplexers, Decoders, Encoders, Code converters, Arithmetic comparison circuits. VHDL for Combinational circuits.



Basic Latch Gated SR Latch, Gated D Latch, Master-Slave and Edge- Triggered D Flip- Flops, T Flip-flop, JK Flip-flop, Excitation tables. Registers-Shift Register, Counters- Asynchronous and synchronous counters, Ring counter, Johnson counter, VHDL code for D Flip-flop and Up-counter



Synchronous Sequential Circuits – Basic design steps. Moore and Mealy state model, State minimization, Design of a Counter using the Sequential Circuit Approach. Algorithmic State Machine (ASM) charts



Asynchronous Sequential Circuits – Behaviour, Analysis, Synthesis, State reduction, State Assignment, examples. Hazards: static and dynamic hazards. Significance of Hazards. Clock skew, set up and hold time of a flip-flop


Suggested Reading :

1. Stephen Brown, Zvonko Vranesic, “Fundamentals of Digital Logic with VHDL Design”, 2nd Edition, McGraw Hill, 2009.

2. Jain R.P., “Modern Digital Electronics,” 3rd Edition, TMH, 2003.

3. John F. Wakerly, “Digital Design Principles & Practices”, 3rd Edition, Prentice Hall, 2001

4. M. Morris Mano, Charles R. Kime, “Logic and Computer Design Fundamentals”, 2nd Edition, Pearson Education Asia, 2001.

5. ZVI Kohavi, Switching and Finite Automata Theory, 2nd Edition, Tata McGraw Hill, 1995.

6. William I Fletcher, “An Engineering Approach to Digital Design”, Eastern Economy Edition, PHI

7. H.T. Nagle, “Introduction to Computer Logic”, Prentice Hall, 1975.