Скачать или смотреть Class 11 Computer Science NCERT Chapter-2 Encoding Schemes and Number System Q&A | Exercise

Welcome to the ultimate exercise solution guide for *Chapter 2: Encoding Schemes and Number System* from **Class 11 Computer Science (CBSE)**! In this video, we provide step-by-step solutions to all the **NCERT textbook exercises**, helping you master the key concepts and prepare confidently for your exams.

📚 *What You’ll Learn:*
Complete solutions for **Chapter 2: Encoding Schemes and Number System**.
Detailed explanations of **binary numbers**, **decimal-to-binary conversion**, **octal and hexadecimal systems**, and their interconversions.
Insights into popular *encoding schemes* like *ASCII* and **Unicode**.
Tips for solving number system problems quickly and accurately in **CBSE exams**.
Alignment with the *NCERT syllabus* to ensure reliable and accurate content.

This video is designed to help *Class 11 CBSE students* understand and solve textbook problems with ease. Whether you’re revising for exams or looking to clarify your doubts, this video is your go-to resource for excelling in **computer science**.

🔔 Don’t forget to *like, comment, share, and subscribe* to our channel for more *NCERT-based Computer Science lessons**, exercise solutions, and study tips. Let’s ace **CBSE Class 11 Computer Science* together!


Encoding scheme maps text into the codes that facilitate communication among computers.
• Textual data is encoded using ASCII, ISCII or Unicode.

•Unicode scheme is a character encoding standard which can encode all the characters of almost all languages of the world.

• Computer being a digital system understands only binary numbers which are 0 and 1.
• Encoded text is converted to binary form for processing by the computer.

• Octal and hexadecimal number systems are used to simplify the binary coded representation as they allow grouping of 3 or 4 bits of binary numbers each, respectively.

Exercise
1. Write base values of binary, octal and hexadecimal number system.

2. Give full form of ASCII and ISCII.

3. Try the following conversions.
(i) (514)8 = (?)10 (iv) (4D9)16 = (?)10(ii) (220)8 = (?)2 (v) (11001010)2 = (?)10(iii) (76F)16 = (?)10 (vi) (1010111)2 = (?)10

4. Do the following conversions from decimal number to other number systems.
(i) (54)10 = (?)2 (iv) (889)10 = (?)8 (ii) (120)10 = (?)2 (v) (789)10 = (?)16 (iii) (76)10 = (?)8 (vi) (108)10 = (?)165. Express the following octal numbers into their equivalent decimal numbers.(i) 145 (ii) 6760 (iii) 455 (iv) 10.75
6. Express the following decimal numbers into hexadecimal numbers. (i) 548 (ii) 4052 (iii) 58 (iv) 100.25

7. Express the following hexadecimal numbers into equivalent decimal numbers.(i) 4A2 (ii) 9E1A (iii) 6BD (iv) 6C.34

8. Convert the following binary numbers into octal and hexadecimal numbers.(i) 1110001000 (ii) 110110101 (iii) 1010100 (iv) 1010.1001

9. Write binary equivalent of the following octal numbers.(i) 2306 (ii) 5610 (iii) 742 (iv) 65.203

10. Write binary representation of the following hexadecimal numbers.(i) 4026 (ii) BCA1 (iii) 98E (iv) 132.45

11. How does computer understand the following text? (hint: 7 bit ASCII code). (i) HOTS (ii) Main (iii) CaSe

12. The hexadecimal number system uses 16 literals (0 – 9, A– F). Write down its base value.

13. Let X be a number system having B symbols only. Write down the base value of this number system.

14. Write the equivalent hexadecimal and binary values for each character of the phrase given below. ‘‘ हम सब एक”

15. What is the advantage of preparing a digital content in Indian language using UNICODE font?

16. Explore and list the steps required to type in an Indian language using UNICODE.

17. Encode the word ‘COMPUTER’ using ASCII and convert the encode value into binary values.