HarvardX: CS50’s Introduction to Computer Science course Syllabus

Full curriculum breakdown — modules, lessons, estimated time, and outcomes.

This is a comprehensive introduction to computer science, designed to build deep programming and problem-solving skills from the ground up. The course spans approximately 12 weeks with a total time commitment of 180–200 hours, averaging 15–20 hours per week. Through a mix of lectures, hands-on problem sets, and a final project, learners explore foundational concepts in computer science using languages like C, Python, SQL, and JavaScript. The curriculum progresses from low-level programming to high-level web development, emphasizing real coding, algorithmic thinking, and software design.

Module 1: Foundations of Computer Science

Estimated time: 40 hours

Introduction to algorithms and computational problem-solving
Binary representation and computer memory
Computational logic and abstraction
Programming in C: syntax, compilation, and execution
Debugging strategies and tools

Module 2: Data Structures and Memory

Estimated time: 50 hours

Arrays, linked lists, stacks, and queues
Trees and hash tables
Pointers and dynamic memory allocation in C
Memory management and common pitfalls
Algorithm efficiency and Big O notation

Module 3: High-Level Programming with Python

Estimated time: 35 hours

Transition from C to Python
Python syntax and data structures
Functions, libraries, and modularity
Problem-solving with higher-level abstractions

Module 4: Database and SQL Fundamentals

Estimated time: 25 hours

Introduction to databases and relational models
SQL queries: SELECT, INSERT, UPDATE, DELETE
Joining tables and indexing
Data integrity and normalization basics

Module 5: Web Development with HTML, CSS, and JavaScript

Estimated time: 30 hours

HTML structure and semantic markup
CSS for styling and layout
JavaScript for client-side interactivity
Building and deploying simple web applications

Module 6: Final Project