Harsh RB

Digital Electronics for Engineering

3 min read

Course Objectives

  1. Boolean Algebra: Understand the properties and theorems of Boolean algebra.
  2. Logic Gates: Gain knowledge of basic logic gates, universal gates, and their switching mechanisms.
  3. Boolean Expression Simplification: Learn techniques to simplify Boolean expressions using Karnaugh maps (K-maps).
  4. Logic Families & ICs: Introduce logic families (e.g., TTL, CMOS) and different types of integrated circuits (ICs).

Course Outcomes (COs)

Upon completion of this course, students will be able to:

  1. CO1: Understand the basics of logic gates, universal gates, and their switching logics.
  2. CO2: Realize Boolean expressions using NAND/NOR gates and simplify them using K-maps.
  3. CO3: Design and analyze combinational and sequential circuits.
  4. CO4: Understand the realization of logic families using diodes and transistors, as well as the functioning of different types of integrated circuits.

Notes

Digital Electronics for Engineering Class Notes DEE Assignment

Syllabus

UNIT 1 Number Systems and Boolean Algebra

  • Number Systems:
    • Binary, Octal, Decimal, and Hexadecimal number systems.
    • Complements of numbers (1’s complement, 2’s complement).
    • Weighted and Non-weighted codes (BCD, Gray code, Excess-3 code).
  • Boolean Algebra:
    • Basic theorems and properties.
    • Switching functions: Canonical (SOP, POS) and Standard forms.
    • Algebraic simplification of Boolean expressions.
  • Digital Logic Gates:
    • AND, OR, NOT, NAND, NOR, XOR, XNOR gates.
    • Universal gates (NAND, NOR).
    • Multilevel NAND/NOR realizations.

UNIT 2 Minimization of Boolean Functions and Combinational Circuits

  • Minimization Techniques:
    • Karnaugh Map (K-map) method for up to four variables.
    • Don’t care conditions in K-maps.
    • Tabular method (Quine-McCluskey method).
  • Combinational Logic Circuits:
    • Adders (Half Adder, Full Adder), Subtractors (Half Subtractor, Full Subtractor).
    • Comparators, Multiplexers, Demultiplexers.
    • Encoders, Decoders, Code Converters.
    • Hazards and Hazard-free relations.

UNIT - III: Sequential Circuits Fundamentals

  • Basic Concepts:
    • Differences between combinational and sequential circuits.
  • Latches and Flip-Flops:
    • SR Latch, SR Flip-Flop, JK Flip-Flop, JK Master-Slave Flip-Flop, D Flip-Flop, T Flip-Flop.
    • Excitation tables for all flip-flops.
  • Shift Registers:
    • Basics of shift registers (SISO, SIPO, PISO, PIPO).
  • Counters:
    • Ripple counters, Decade counters.

UNIT - IV: Realization of Logic Gates Using Diodes & Transistors

  • Diode and Transistor-Based Logic Gates:
    • AND, OR, NOT gates using diodes and transistors.
  • Logic Families:
    • DCTL, RTL, DTL, TTL, CML, CMOS.
    • Comparison of logic families.
  • TTL Characteristics:
    • Standard TTL NAND gate analysis.
    • Open-collector outputs, Tristate TTL.
  • MOS and CMOS:
    • Open-drain and tristate outputs.
    • CMOS transmission gate.

UNIT - V: Integrated Circuits

  • Classification of ICs:
    • Chip size and circuit complexity.
  • Operational Amplifiers (Op-Amps):
    • Ideal vs. practical Op-amp characteristics.
    • Internal circuitry of Op-amps.
    • DC and AC characteristics of Op-amps.
    • 741 Op-amp features and modes of operation (inverting, non-inverting, differential).

Textbooks

  1. Switching and Finite Automata Theory by Zvi Kohavi & Niraj K. Jha, 3rd Edition, Cambridge, 2010.
  2. Modern Digital Electronics by R. P. Jain, 3rd Edition, 2007, Tata McGraw-Hill.
  3. Linear Integrated Circuits by D. Roy Chowdhury, New Age International (P) Ltd.
  4. Op-Amps & Linear ICs by Ramakanth A. Gayakwad, PHI.

Reference Books

  1. Digital Design by Morris Mano, PHI, 4th Edition, 2006.
  2. Operational Amplifiers & Linear Integrated Circuits by R.F. Coughlin & Fredrick F. Driscoll, PHI.
  3. Operational Amplifiers & Linear Integrated Circuits: Theory & Applications by Denton J. Daibey, TMH.

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