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CS50 - Introduction to Computer Science

Build a rigorous foundation in computer science through hands-on problem solving—learn C and Python, algorithms, data structures, web development, databases, and complete a capstone project.

Computer Science · Beginner

Free · Self-paced · Certificate included

CS50 - Introduction to Computer Science

About this course

This introductory course builds a rigorous foundation in computer science through hands-on problem solving and real-world applications. Starting with computational thinking and C programming, you will learn how information is represented, how programs are structured, and how algorithms are designed and analyzed for efficiency. You will explore memory, pointers, and file I/O, progress through core...

What you'll learn

  • Apply computational thinking to decompose and solve complex problems
  • Write, compile, and debug efficient programs in C and manage memory with pointers
  • Implement core data structures (arrays, lists, trees, hash tables) and analyze their complexity
  • Design and analyze algorithms, including recursion and asymptotic efficiency
  • Develop Python applications and apply object-oriented programming patterns
  • Use SQL to model relational data and perform queries and transactions
  • Build front-end interfaces with HTML, CSS, and JavaScript
  • Create server-side web applications with Flask and integrate back-end services
  • Employ version control (Git), testing, and software engineering best practices
  • Demonstrate cybersecurity and privacy fundamentals and apply secure coding principles
  • Plan, build, and deploy a complete capstone application to showcase learning

Prerequisites

No prior programming required; recommended: comfort with basic algebra, curiosity, and time to complete weekly problem sets.

Level
Beginner· Level
Duration
12 weeks (10–20 hours/week)· Duration
Language
English· Language
Modules
15· Modules

Skills you'll gain

  • C programming
  • Python programming
  • Algorithm design & analysis
  • Data structures
  • Memory management & pointers
  • SQL & relational databases
  • HTML/CSS/JavaScript
  • Flask and server-side development
  • Version control (Git)
  • Software testing & debugging
  • Cybersecurity fundamentals
  • Project design & deployment

What you'll study

15 modules — work at your own pace.

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