Ch 1.1 Number systems (FULL) | Ch 1 Data Representation | O Level / IGCSE CS | 2210/0478

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One Note P1
https://onedrive.live.com/personal/1b...

Annotated PDFs
https://drive.google.com/drive/folder...

Unannotated PDFs
https://drive.google.com/drive/folder...

Paper 2 OneNote
https://1drv.ms/o/c/1b1616c4cd94fcff/...

Paper 2 PDFs
https://drive.google.com/drive/folder...

📚 CAIE AS Level Computer Science – Number Systems (1.1) 🔢
In this video, we cover everything you need to know about Number Systems from the CAIE AS Level Computer Science syllabus (9608/9618). This foundational topic introduces how computers represent and process numbers using binary, denary, and hexadecimal systems.

🔍 What You'll Learn:
✅ Why computers use binary to represent data
✅ Understanding the denary, binary, and hexadecimal number systems
✅ Converting between:
 • Denary ↔ Binary
 • Denary ↔ Hexadecimal
 • Binary ↔ Hexadecimal
✅ How and why hexadecimal is used in computing
✅ Binary addition (8-bit) and overflow errors
✅ Performing logical binary shifts (left & right)
✅ Using two’s complement to represent both positive and negative 8-bit binary integers

🧠 Includes step-by-step examples, practical explanations, and exam-focused tips — perfect for students preparing for Paper 1 and Paper 2.

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