What is a File Extension? | .PDF, .DOCX, .JPG Explained | CS Wali Madam

Описание: What does .pdf, .jpg, or .docx mean?
They’re called file extensions, and they tell your computer how to open a file.

📌 Learn the basics of file types and formats in this 1-minute explainer — in Hindi-English (Hinglish)!

✅ Part of SEC 1 – Elementary Computer Applications
🎓 Made for B.A., B.Com, B.Sc, and beginner learners.

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