CS Fundamentals
449 articles in this topic
C Operators and Expressions Explained: Precedence, Types and Worked Traces
Learn a repeatable way to parse and evaluate C expressions. Follow typed calculations, bitwise and short-circuit traces, and common exam traps.
Updated 22 Oct 20266 min readC Programming & Data Structures
Data Transmission Modes and Connection Types: Simplex, Half-Duplex and Full-Duplex
Learn to classify simplex, half-duplex, full-duplex, point-to-point and multipoint links, then calculate completion time without relying on memorised examples.
Updated 22 Oct 20265 min readComputer Networks
Code Optimization Mistakes in Compiler Design: How to Avoid Losing GATE Marks
A rewrite that looks familiar is not necessarily safe. Trace six common optimization errors, learn why each one changes program meaning, and use a five-step check before accepting an answer.
Updated 22 Oct 20265 min readCompiler Design
Graphical Method in Linear Programming: Feasible Region, Corner Points and Optimality with a Worked Example
Learn the two-variable graphical method in the right order, then solve and audit a complete maximisation model without trusting the sketch alone.
Updated 21 Oct 20265 min readEngineering Mathematics
Critical Section in Process Synchronization: Race Conditions and Correctness Worked Step by Step
See how two sensible updates to x can finish at 6, 7, or 8. The worked trace connects race conditions to mutual exclusion, progress, bounded waiting, and safe synchronization choices.
Updated 21 Oct 20266 min readOperating Systems
SQL Joins Explained: INNER, LEFT, RIGHT, FULL, CROSS and SELF with Runnable Examples
Trace all six SQL join types on one support-agent dataset, with runnable queries, exact outputs, NULL behaviour, row counts and filter-placement traps.
Updated 21 Oct 20265 min readDBMS
Regex Basics and Definitions: Operators, Worked Examples and Exam Patterns
Learn how regular expressions denote languages, how their three core operators bind, and how to build and check expressions with exact binary examples.
Updated 21 Oct 20265 min readTheory of Computation
Data Manipulation Micro-Operations in COA: Arithmetic, Logic and Shift Operations Worked Step by Step
Learn a fixed-width method for tracing arithmetic, logic, and shift micro-operations. Every example tracks register values, result bits, carry, and overflow.
Updated 19 Oct 20265 min readComputer Organization & Architecture
Binary Arithmetic Operations Explained: Rules and Worked Examples
Learn binary addition, subtraction, multiplication and division with aligned worked examples, then separate carry, borrow and two's-complement overflow.
Updated 19 Oct 20266 min readDigital Logic
Introduction to Flowcharts: Symbols, a Worked Example and Exam Traps
Learn how flowchart symbols express sequence, decisions and loops. Then trace a complete even-sum example, translate it into C and repair common logic defects.
Updated 18 Oct 20266 min readC Programming & Data Structures
Computer Networks Interview Questions: Trace OSI, TCP/IP and Routing Step by Step
Follow one synthetic web request across DNS, ARP, TCP, NAT and longest-prefix routing, then turn each step into a strong interview answer.
Updated 18 Oct 20266 min readComputer Networks
Compiler Design Semester Guide: Trace One Program from Tokens to Target Code
Follow one assignment through lexical analysis, parsing, semantic checks, TAC, optimization and abstract target instructions, with every hand-off made visible.
Updated 18 Oct 20267 min readCompiler Design