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Encoding Schemes and Number System — Study Plan

CBSE · Class 11 · Computer Science

A step-by-step study plan for Encoding Schemes and Number System, CBSE Class 11 Computer Science: what to learn first, what to practise and when to revise.

86 questions80 flashcards16 formulas & key relations5 concepts

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Study Plan

1
Day 1–2

Learn the Theory

Read the textbook chapter carefully. Note down definitions, formulas and key ideas. Focus on: 1. Encoding Schemes, 2. ASCII, ISCII, and Unicode Examples, 3. Number Systems and Positional Value.

2
Day 3

Practise

Solve the textbook exercises and extra practice questions. There are 86 questions available for this chapter.

3
Day 4

Revise & Test

Revise key points without looking at your notes. Take a practice quiz and mark weak areas for another pass.

4
Day 7

Spaced Revision

Come back to Encoding Schemes and Number System after a week. Use flashcards for quick recall and try past exam questions on this chapter.

What to Focus On

  • Encoding converts data into a coded form for computer processing.
  • Cipher is coded form used to hide content.
  • Keyboard keys are mapped to unique codes before binary conversion.
  • ASCII is a 7-bit encoding scheme for English characters.
  • ASCII capacity is 2^7 = 128 characters.
  • ISCII is an 8-bit encoding scheme for Indian scripts.
  • Radix or base is the number of unique symbols in a number system.
  • Positional value depends on the place of a digit.
  • Integer part positions start at 0 on the right.

Common Mistakes to Avoid

ASCII is an 8-bit code that represents all world languages.

ISCII is the same as ASCII because both are used for characters.

Unicode is just a bigger version of ASCII with completely different values.

Memory Tips

Encoding as converting data into a coded form

Cipher and encryption

Keyboard key to unique code to binary

ASCII meaning and purpose

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Frequently Asked Questions

What are the important topics in Encoding Schemes and Number System for CBSE Class 11 Computer Science?
Key topics in Encoding Schemes and Number System include Encoding Schemes, ASCII, ISCII, and Unicode Examples, Number Systems and Positional Value, Binary, Octal, and Hexadecimal Number Systems. Study these first, then practise questions on each for Class 11 exams.
How should I revise Encoding Schemes and Number System for Class 11 exams?
Learn the core ideas first, then work through the 86 practice questions on Encoding Schemes and Number System. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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