Computer Science Core Notes

A single-page, structured, at-a-glance revision system covering essential Computer Science fundamentals.

This project is designed as a fast reference sheet for core CS subjects with clean mental models, trade-offs, and interview-ready clarity.
It avoids blog-style explanations and focuses only on structured, high-signal concepts.

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Purpose

• Quick revision before interviews
• Strong system-level thinking
• Clear mental models across OS, Networks, DBMS, and System Design
• Concept-first explanations instead of memorized definitions
• Structured content optimized for rapid scanning

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Subjects Covered

Operating Systems

• Processes and threads
• CPU scheduling
• Synchronization and deadlocks
• Memory management
• Virtual memory
• File systems
• I/O systems
• Performance trade-offs

Computer Networks

• OSI and TCP/IP models
• TCP vs UDP
• Routing and switching basics
• HTTP and DNS
• Congestion control
• Load balancing
• Network security fundamentals

DBMS

• Relational model
• ACID properties
• SQL essentials
• Indexing
• Normalization
• Transactions and isolation levels
• Query optimization basics

System Design

• Scalability and availability
• CAP theorem
• Monolith vs microservices
• Caching strategies
• Replication and sharding
• Load balancers and reverse proxies
• High-level architecture patterns

Software Engineering

• SDLC models
• Agile and Scrum basics
• Version control concepts
• Testing fundamentals
• CI/CD overview
• Code quality and maintainability

Distributed Systems

• Consistency models
• Consensus basics
• Replication
• Fault tolerance
• Event-driven systems

Compiler Design

• Lexical analysis
• Parsing basics
• Syntax trees
• Code generation overview

Theory of Computation

• Automata basics
• Regular expressions
• Context-free grammars
• Turing machine concept
• Decidability intuition

Cryptography and Security

• Symmetric vs asymmetric encryption
• Hashing and digital signatures
• TLS basics
• Common web vulnerabilities
• Secure system design mindset

Cloud Computing

• IaaS, PaaS, SaaS
• Virtualization
• Containers
• Serverless basics
• Scaling strategies

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Project Type

Single Page Application
Section-based navigation
Collapsible and searchable content
Modular structure per subject
No tutorials, only structured notes

Each subject is organized into clear sections for fast recall and mental mapping.

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Tech Stack

• React
• Vite
• styled-components
• react-icons

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Run Locally

npm install
npm run dev

Goal

To build a clean, structured Computer Science revision system that strengthens reasoning, system thinking, and interview performance.