Digital Electronics and Logic Design
Video Lessons & Revision Notes1. Number System
Revision Notes - 1
Introduction: Binary, Hexadecimal numbers, octal numbers and number conversion.
Signed Binary number representation: Signed Magnitude, 1’s complement and 2’s complement representation.
Binary, Octal, Hexadecimal Arithmetic: 2’s complement arithmetic.
Featured Lesson in Number System
Number System - Basic Concepts and Introduction to Binary Numbers
45 mins Video LessonNumber System: Introduction, Binary Number System, Decimal To Binary, One's Complement, Two's Complement, and other topics.
2. Boolean Algebra
Revision Notes - 2
Algebra for logic circuits: Logic variables, Logic functions -NOT, AND, NOR, XOR, OR, XNOR, NAND
Boolean algebra: Truth tables and Boolean algebra. Idealized logic gates and symbols. DeMorgan's rules Axiomatic definition of Boolean algebra, Basic theorems and properties of Boolean algebra
Logic minimization: Representation of truth-table, SOP form, POS form, Simplification of logical functions, Minimization of SOP and POS forms, Don’t care conditions
Reduction techniques: K-Maps up to 4 variables and Quine-McClusky technique
Featured Lesson in Boolean Algebra
Boolean Algebra - Basic Concepts, Theorems and Duality
49 mins Video LessonBoolean Algebra, Realization of Boolean expression with gates, Example, Dual of an expression, Duality Principle, Boolean Algebra Theorems, Proofs, and other topics.
3. Logic Families
Revision Notes - 1
TTL: Standard TTL characteristics- Speed, power dissipation, fan-in, fan-out, current and voltage parameters, noise margin, operating temperature etc. Operation of TTL NAND gate. TTL Configurations- Active pull-up, Wired AND, totem pole, open collector.
CMOS: CMOS Inverter, CMOS characteristics
Interfacing: TTL to CMOS and CMOS to TTL
Featured Lesson in Logic Families
Characteristics of ICs and Introduction to TTL Family
48 mins Video LessonCharacteristics of ICs, Propogation Delay, Power Dissipation, Figure of Merit, Fan In, Fan Out, Current and Voltage Parameters, Noise Margin, Operating Temprature, TTL Family, TTL Nand: Totem Pole, and other topics.
4. Combinational Logic
Revision Notes - 1
Arithmetic Operations: - Binary Addition, Subtraction, Multiplication, Division, BCD Addition
Circuits: - Half- Adder, Full Adder, Half Subtract or, Full Sub tractor, BCD adder using and subtract using 7483, look ahead and carry, parity generator and checker using 74180, magnitude comparator using 7485.
Multiplexers (MUX):- Working of MUX, Implementation of expression using MUX (IC 74153, 74151).
Demultiplexers (DEMUX):- Implementation of expression using DEMUX, Decoder. (IC 74138).
Featured Lesson in Combinational Logic
Ripple Adder, Fast Adder, Subtractor and IC 7483
50 mins Video LessonParallel/ Ripple Adder, Look Ahead Carry / Fast Adder, IC 7483, BCD Adder using IC 7483, Subtractor using IC 7483, Adder/ Subtractor using IC 7483, and other topics.
5. Sequential Logic : Flip Flops
Revision Notes - 1
Introduction: Sequential Circuits. Difference between combinational circuits and sequential circuits
Flip- flop: SR, JK, D, T; Preset & Clear, Master and Slave Flip Flops their truth tables and excitation tables, Conversion from one type to another type of Flip Flop.
Featured Lesson in Sequential Logic : Flip Flops
Sequential Logic - Basic Concepts and SR Flip Flop
52 mins Video LessonSequential Circuits, Moore Ciruits, Mealy circuits, Bitstable element, SR Flip Flop, Characteristic Table, Excitation Table, Characterisitc Equation, State Diagram, SR with Preset and Clear, and other topics.
6. Sequential Logic : Registers And Counters
Revision Notes - 1
Application of Flip-flops: registers, counters.
Registers: Buffer register; shift register
Counters: Asynchronous counter. Synchronous counter, ring counters, BCD Counter, Johnson Counter
Featured Lesson in Sequential Logic : Registers And Counters
Registers - Part 2
31 mins Video LessonShift Left Register, Serial In Parallel Out Register, Parallel In Serial Out Register, Bidirectional Shift Register, and other topics.
7. Sequential Logic Design
Revision Notes - 1
Sequential Circuit Design Concepts, Sequence Generator and Sequence Detector.
Featured Lesson in Sequential Logic Design
Sequential Design - Basic Concepts
57 mins Video LessonState Reduction, State Table, Equivalent States, Sequential Circuit Design (synchronous), Example , and other topics.
8. ASM
Revision Notes - 1
Algorithmic State Machines: ASM charts, notations, design of simple controller, multiplexer controller method
Examples: Sequence Generator, Types of Counter
Featured Lesson in ASM
ASM Charts - Basic Concepts
50 mins Video LessonIntroduction, State Box, Decision Box, Condition Box, State Diagram to ASM chart, Example , ASM to logic Circuit, and other topics.
9. VHDL
Revision Notes - 1
VHDL: Introduction to HDL, VHDL- Library, Entity, Architecture, Modeling Styles, Concurrent and Sequential Statements, Data Objects & Data Types, Attributes.
Design Examples: VHDL for Combinational Circuits-Adder, MUX.VHDL for Sequential Circuits-Synchronous and Asynchronous Counter
Featured Lesson in VHDL
VHDL - Basic Concepts and Concurrent Statements
45 mins Video LessonVHDL: Introduction, Entity Declaration, Examples, VHDL Architecture Types, Data Flow/ Concurrent Modelling, Concurrent Statements, and other topics.
10. PLDs and Microprocessor
Revision Notes - 2
PLD: PLA- Input, Output Buffers, AND, OR, Invert/ Non-Invert Matrix.
Design Example: Any 4 Variables SOP function using PLDs, Study of basic architecture of FPGA
Introduction to Microprocessor: Introduction of Ideal Microprocessor, Data Bus, Address Bus, Control Bus, Microprocessor Based System- Basic Operation, Microprocessor Operation, Microprocessor Architecture, Instruction Set
Featured Lesson in PLDs and Microprocessor
Microprocessor - Basic Concepts, Bus and Block Diagram
43 mins Video LessonMicroprocessor: Introduction, Ideal Microprocessor, Bus, Bus Width, Data Bus, Address Bus, Control Bus, MP: Block Diagram, and other topics.