Unit 1 • Class 9Computer Science (2081 Edition) (Com.091)
Number Systems & Conversion Tables (0–15)
संख्या प्रणाली तथा रूपान्तरण तालिकाहरू (० देखि १५ सम्म)
Binary, Octal, Decimal, and Hexadecimal number systems, base conversion algorithms, and the standard conversion table for decimal numbers 0 to 15 (Binary 0000–1111, Hex 0–F).
Lesson Summary & Key Concepts
Digital computer number systems from the revised 2081 CDC Computer Science textbook: Decimal, Binary, Octal, Hexadecimal, standard 0–15 conversion table, and base arithmetic.
Textbook Exercises & Solutions
Showing 1 of 1 Solved QuestionsQuestion 1• 4 Marks
Quick Revision Takeaways
Common Exam Pitfalls to Avoid
⚠️ Common Error: Writing (10)₁₆ instead of A for decimal 10.
✓ Correct Approach: Use letters A, B, C, D, E, F for values 10 to 15.
Why: In hexadecimal, (10)₁₆ represents 1×16¹ + 0 = 16, not 10.
Content Provenance & Verification
Editorial Verified & Published
Original Author / ContributorCDC Computer Science Technical Panel
Verified BySenior Subject Specialist (TU / NEB Panel)
Curriculum Versionv1.0 (CDC 2078/2080 Grid)
Last Verified Date2026-10-23
Legitimate Official Curriculum References
public curriculum
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