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DI03000111 · Semester 3 · 5G scheme

Digital Logic Design

Notes and solutions following the Gujarat Technological University (GTU) syllabus for DI03000111. Independent material — not issued by the university.

Information & Communication TechnologyElectronics & Communication Engineering

Materials

Syllabus

The official syllabus this material follows.

  • Syllabus

    10 pages

    FreeRead

Complete Book

The whole syllabus, unit by unit, written for the exam.

Problem Solver

Step-by-step solutions to typical problems.

Slides

Lecture slides for revision.

Past Papers

Original question papers from previous exams.

  • Summer 2026 question paper

    3 pages

    FreeRead

  • Winter 2025 question paper

    3 pages

    FreeRead

PYQ Solutions

Past university papers, fully solved.

  • Solved past papers — detailed answers

    50 pages · English + ગુજરાતી

    Premium Preview · 6 pages

Assignments & Tests

Assignments and unit tests to practise with.

Syllabus units

Unit 1: Number systems and codes
  • Introduction to various number systems: Binary, Octal, Decimal, Hexadecimal
  • Conversion from one number system to another and vice-versa
  • Binary arithmetic operations: addition, subtraction, multiplication and division
  • 1's and 2's Complement of binary number & subtraction using 1's and 2's complement method
Unit 2: Boolean algebra and logic gates
  • Digital Logic Gates: Symbol, operation and truth-table of AND, OR, NOT, NAND, NOR, EX-OR, EX-NOR gates
  • Basic theorems and properties of Boolean algebra
  • Implementations of Boolean function using AND-OR-Invert logic gates
  • Universal Gates: NAND & NOR
  • Algebraic simplification of Boolean expression using Boolean algebra
  • Sum of Product (SOP) definition and Simplification of Boolean function using Karnaugh map (K-map) up to 4-variables
  • Don't care condition in K-map
Unit 3: Combinational logic circuits
  • Arithmetic Circuits: Design Half adder, full adder, half subtractor, full subtractor; Block diagram of parallel adder using half and full adder block (up to 4-bit)
  • Encoder (4:2, 8:3); Decoder (2:4, 3:8)
  • Multiplexers (2:1, 4:1, 8:1); De-multiplexers (1:2, 1:4, 1:8)
  • Binary to Gray and Gray to binary code converters up to 4 bits
Unit 4: Sequential logic circuits
  • Flip-flops: SR, D, JK, T, Master Slave JK
  • Triggering methods
  • Shift Registers: Classification - (i) Serial in serial-out, (ii) serial-in parallel-out, (iii) parallel-in serial-out and (iv) parallel-in parallel out
  • Counters: Ring Counter, Johnson Counter, 4 bit Asynchronous (Ripple) Counter, 4 bit Synchronous up/down Counter, BCD/Decade counter
Unit 5: Introduction to Memories and logic families
  • Introduction and Types of Memory: RAM (SRAM, DRAM), ROM (PROM, EPROM, EEPROM)
  • Overview of different logic family Definitions: Fan in, Fan out, Noise margin, Propagation delay, Power dissipation, Figure of merit
  • Comparison of different logic families (TTL, CMOS, ECL)
  • E-waste Management of Digital ICs/Chips

About this course

Digital technology-the fastest growing technology has revolutionized the electronics industry. In most of the applications digital technology has replaced analogue technology. Digital logic is the heart of digital electronic circuits. A basic understanding of this subject is therefore essential to effective maintenance of the digital electronic devices. The study of this course will enable the students to test the working and rectify the faults of common digital circuits. The syllabus has been designed to make students know about fundamental principles of Digital Electronics and gain familiarity with the available IC chips.