Encoding Schemes and Number System
Karnataka Board · Class 11 · Computer Science
Summary of Encoding Schemes and Number System for Karnataka Board Class 11 Computer Science. Key concepts, important points, and chapter overview.
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Overview
This chapter explores how computers process and represent human-readable information through encoding schemes and different number systems. Since computers only understand binary language (0s and 1s), we need special methods to convert text, numbers, and symbols into a form that computers can proces
Key Concepts
The mechanism of converting data into
The mechanism of converting data into an equivalent cipher using specific codes. When you press a key on the keyboard, it gets mapped to a unique code
A 7
A 7-bit encoding scheme that can represent 128 different characters (2^7 = 128). It includes English letters (uppercase and lowercase), digits (0-9),
An 8
An 8-bit encoding scheme developed in India during the 1980s to support Indian languages. It can represent 256 characters (2^8 = 256) - retains all 12
A universal encoding standard that provides
A universal encoding standard that provides a unique number for every character of every written language in the world. Common encodings include UTF-8
The number system we use daily
The number system we use daily with 10 digits (0-9). Each position represents powers of 10. For example, 237 = 2×10² + 3×10¹ + 7×10⁰ = 200 + 30 + 7.
Learning Objectives
- Understand the concept of encoding and why it is necessary for computer systems
- Learn about different encoding schemes including ASCII, ISCII, and UNICODE
- Master the four number systems: decimal, binary, octal, and hexadecimal
- Develop skills to convert numbers between different number systems
- Apply knowledge of number systems in real-world computer applications
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Sources & Official References
- Karnataka SSLC — kseeb.kar.nic.in
- Dept of Pre-University Education, Karnataka
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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