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.
A programming language is a formal language used to write instructions that a computer can understand and execute. Just like humans communicate using languages like English or Hindi, computers understand instructions written in programming languages.
| Aspect | Human Language | Programming Language |
|---|---|---|
| Purpose | Communicate ideas, emotions | Give instructions to computers |
| Structure | Flexible and expressive | Strict and logical |
| Examples | English, Hindi, Tamil | Python, C++, Java |
Python
print("Hello, world!")
C++
#include<iostream>
using namespace std;
int main() {
cout << "Hello, world!";
return 0;
}
JavaScript
console.log("Hello, world!");
Think of a programming language as a recipe book. You (the programmer) give clear instructions (code) to the cook (computer), who prepares the dish (output) exactly as instructed — no guessing!
The first programming language was created in the 1840s by Ada Lovelace, making her the world’s first programmer.
In the next chapter, we’ll explore Compiler vs Interpreter — and how they turn your code into something the machine can understand.