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In the NCERT Computer Science book “Computer Science” (Class 11, Chapter – “Encoding Schemes and Number System”), you explore how computers represent numbers, text, and symbols internally. You understand how binary, octal, decimal, and hexadecimal systems are used to store and process data efficiently inside a computer system.
You learn how to convert numbers from one base to another and perform binary arithmetic operations. The chapter explains concepts like 1’s complement, 2’s complement, and signed number representation, helping you understand how positive and negative numbers are stored in memory.
You also study character encoding schemes such as ASCII and Unicode, which allow computers to represent letters, symbols, and special characters digitally. This chapter strengthens your logical thinking and builds a strong foundation for programming and advanced computational concepts.
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1
51
10
40
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20
57
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10
G11
Computer Science
Numbering
Thinking Skills
Educational Skills
Academic skill
Analytical Thinking