0478/0984 iGCSE Computer Science - Unit 1 Lesson 7: Digital Images - Pixels Resolution Colour Depth
📌 0478/0984 iGCSE Computer Science - Unit 1 Lesson 7: Digital Images
Welcome to Unit 1, Lesson 7 of the iGCSE Computer Science (0478/0984) course! In this lesson, we explore Digital Images, understanding how computers represent and manipulate images using binary data.
🎥 Lesson Breakdown:
0:00 - Intro
0:40 - What is a pixels
2:00 - How an image is stored in a computer
2:55 - Resolution and quality
4:55 - Colour Depth & Bit Depth
8:38 - Calculating image file size
9:00 - Image Compression (Lossy & Lossless)
10:02 - Bitmap vs Vector
11:15 - Practice Questions
🔹 Topics Covered:
✅ What are pixels, and how do they form images?
✅ How do computers store and process images in binary?
✅ Resolution & color depth – Why are they important?
✅ Bitmap vs. vector graphics – What’s the difference?
✅ How does compression impact image quality and file size?
📚 Perfect for:
✔️ iGCSE Computer Science students
✔️ Anyone curious about how computers handle images
✔️ Teachers & educators looking for clear explanations
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📖 Lesson slides available here: https://cswithmrg.gumroad.com/l/Digit...
💬 Have questions? Drop them in the comments!
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