Learn the essential computer science fundamentals that power all modern software — including how code runs, what memory and CPU do, and how programming languages interact with machines. No prior experience needed. This course builds the mindset and foundation for programming, DSA, and interviews.
Programming is the process of giving instructions to a computer to perform a task. These instructions are written in a language that the computer understands — called a programming language.
Computers are powerful, but they can't think on their own. Programming allows us to:
Think of a computer like a robot chef. If you want it to cook something, you must give it a recipe. That recipe is your program — a step-by-step instruction written in a language it understands.
Here's a simple program written in Python that prints "Hello, world!":
print("Hello, world!")
When you run this code, the computer displays the message: Hello, world!
Programming languages are like different ways to talk to a computer. Some popular languages include:
In the next chapter, we’ll learn how a computer works — what the CPU, RAM, and hard disk actually do.