CS Fundamentals
263 articles in this topic
Chomsky Hierarchy for GATE: Classifying a Grammar as Regular, Context-Free, Context-Sensitive or Type-0
Classify grammars mechanically from their production forms. Four worked boundary cases show exactly when a grammar moves from regular to CFG, CSG or Type-0.
Coal India Management Trainee (Systems) Syllabus Decoded: the Technical and Aptitude Split
The MT Systems paper is two preparation jobs: a CS core revised for recall speed, and an aptitude half built beside it. The notification settles the numbers.
Shift Registers, Ring and Johnson Counters for GATE: Frequency Division and Timing Numericals Solved
Build a 4-bit ring counter and Johnson counter state by state, then use their mod values to solve frequency-division and maximum-clock questions.
Storage Classes in C (auto, static, extern, register): Scope, Lifetime and Exam Questions
Separate scope, lifetime, storage duration and linkage, then use one static-versus-auto program and a two-file extern example to predict exam answers.
Express.js REST API Tutorial: Routing, Middleware, and Error Handling the Production Way
Build one small courses API and trace every request through parsing, routing, 404 handling, and a single error path.
Compiler Design for GATE: Syllabus Areas, Weightage Pattern and How to Prepare
See what GATE Compiler Design covers, where practice questions concentrate, how to solve a complete FIRST/FOLLOW example, and which topics to study first.
Lattices and Hasse Diagrams for GATE: Posets, LUB, GLB and the Lattice Test, Solved
Learn to read covering relations, compute joins and meets, and prove whether a poset is a lattice through two complete worked examples.
Multithreading in Java: Thread Lifecycle, synchronized and the Interview Question Set
Understand what Java threads share, trace a lost counter update, and separate BLOCKED, WAITING, and TIMED_WAITING with code you can explain.
GROUP BY and HAVING in SQL: Aggregation Questions from Placement Tests, Solved Step by Step
Trace two placement-style SQL queries from raw rows to grouped results. Learn exactly when to use WHERE, HAVING, COUNT(*), and COUNT(column).
Rice's Theorem for GATE: The Mechanical Test for Undecidability Questions
Run the semantic and non-trivial checklist on six machine properties, learn when Rice is silent, and separate undecidable from RE or non-RE.
Coal India MT Systems Preparation Strategy: How Much of Your GATE CS Prep Transfers
Reuse your GATE CS foundation instead of rebuilding it. Most of the technical core transfers to MT Systems. The aptitude half is what you add, over ten weeks.
Universal Gates for GATE: Realizing Any Function with Only NAND or Only NOR, and Counting the Minimum Gates
Turn SOP into NAND-only and POS into NOR-only circuits, count every gate, and learn the exact two-input counts for AND, OR, XOR and XNOR.