Digital Logic
26 articles in this topic
Shift Registers Explained: Types, Timing and a 4-Bit Worked Trace
Learn one reliable method for tracing shift registers. Fix the bit order, apply simultaneous next-state equations, and follow a complete four-clock example.
Ex-OR and Ex-NOR Gates Explained: Truth Tables, Relations and a Worked Circuit
Learn why Ex-OR detects difference and Ex-NOR detects equality, then trace a three-input circuit and avoid the binary-cascade trap.
Pixel and Color Models Explained: RGB, CMY and HSV Worked Examples
Follow one 8-bit RGB pixel through raster coordinates, raw storage, ideal CMY, HSV, two grayscale rules and 2-bit quantisation, with every convention stated.
Image Fundamentals Explained: Sampling, Quantisation and Worked Examples
Follow one grayscale image from its pixel grid and histogram to downsampling, 2-bit quantisation, reconstruction error, neighbourhoods and distance measures.
Synchronous Counter Design: A MOD-6 JK Flip-Flop Worked Example
Build a MOD-6 synchronous up counter from its state sequence to its JK input equations, then verify valid states, recovery paths, and clock timing.
Adders and Subtractors in Digital Logic: Circuits, Worked Examples and Exam Traps
Learn adders and subtractors from one-bit truth tables to four-bit ripple circuits, with verified addition, subtraction, overflow and delay examples.
RSSB Computer Instructor Digital Logic and Computer Fundamentals: Worked Number Systems, Boolean Algebra and Memory Basics
Connect number systems, Boolean algebra, memory capacity and CPU organisation through four checked examples designed for RSSB Computer Instructor preparation.
Digital India and e-Governance: Models, Service Architecture and Worked ICT Examples
See how an e-governance service works from request to decision. Follow a fictional application, calculate workload and uptime, and test its controls.
Synchronous Counter Analysis: Two Worked State Sequences for GATE
Analyse two three-bit synchronous counters step by step. One produces a binary MOD-8 sequence, while the other shows how unused states can trap a circuit.
Binary, Octal and Hexadecimal: Worked Conversions, Arithmetic and GATE Exam Traps
Follow one value across four bases, then add unlike radices safely and verify the result through binary grouping and decimal place value.
Number System in Digital Electronics: Base Conversion, Complements and Binary Arithmetic
Learn one dependable method for positional values, decimal fractions, binary grouping, complements, subtraction and signed overflow, with every step checked.
Boolean Expressions in Digital Electronics: Laws, Canonical Forms and Worked Simplification
Learn one Boolean function from notation to truth table, canonical forms, simplification and NAND gates, with checks that expose common errors.