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Number System: An Introduction

ICSE · Class 7 · Computer Studies

Flashcards for Number System: An Introduction — ICSE Class 7 Computer Studies. Quick Q&A cards covering key concepts, definitions, and formulas.

43 questions40 flashcards5 concepts

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40 Flashcards
Card 1Overview of number systems

What number systems are generally used in a computer system?

Answer

A computer system generally deals with four number systems: decimal, binary, octal, and hexadecimal.

Card 2Decimal number system

What is the decimal number system?

Answer

A decimal number system uses all the digits from 0 to 9. It is a base-10 system and is the number system used by humans for most mathematics.

Card 3Decimal number system

Why is the decimal number system called a base-10 system?

Answer

It is called a base-10 system because it uses 10 different digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.

Card 4Decimal place value

What does the notation (3435)10 show?

Answer

It shows a decimal number written in base 10. The digits have place values: thousand's digit, hundred's digit, ten's digit, and unit's digit.

Card 5Binary number system

What is the binary number system?

Answer

Binary number system deals only with 0s and 1s. It is a base-2 system and is used internally by computers to represent and process operations.

Card 6Binary number system

Why is binary important for computers?

Answer

Binary is important because computers understand only two states: 0 and 1. These can also represent off and on, or no and yes.

Card 7Decimal to binary conversion

How is a decimal number converted to a binary number?

Answer

Divide the decimal number repeatedly by 2 until the quotient becomes 0. Then arrange the remainders from LSB to MSB to get the binary number.

Card 8Binary conversion terms

What do LSB and MSB mean in conversion to binary?

Answer

LSB means Least Significant Bit, which is the first remainder obtained. MSB means Most Significant Bit, which is the last remainder obtained. The final binary answer is written from MSB to LSB.

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Frequently Asked Questions

What are the important topics in Number System: An Introduction for ICSE Class 7 Computer Studies?
Key topics in Number System: An Introduction include Number Systems Overview, Number Systems Overview - Concept Map, Mind map showing the four main number systems and their key characteristics. These are the concepts ICSE Class 7 examiners draw on most — study them first, then practise related questions.
How to score full marks in Number System: An Introduction — ICSE Class 7 Computer Studies?
Understand the core concepts first, then work through the 43 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many flashcards are available for Number System: An Introduction?
There are 40 flashcards for Number System: An Introduction covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

Sources & Official References

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

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