ICSE Class VII Computer Solutions

Displaying 5 out of 9 questions & answers.
Q1.

Fill in the blanks.

  1. A number system represents __________ which in turn represents ___________.
  2. The base of Binary number system is _________________.
  3. Digits from 0 to 7 are used in ______________ number.
  4. The base of _____________ system is 10.
  5. The base of _______________ system is 16.
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Answer:
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  1. numbers, quantity
  2. 2
  3. octal
  4. decimal
  5. hexadecimal
Q2.

State whether the following statements are True (T) or False (F).

  1. The decimal number 3 is represented in binary as 10.
  2. Hexadecimal system uses 10 digits and 5 letters to represent a number.
  3. Number system conversion is required to communicate for different levels of computer system.
  4. The numbers used in Octal number system are 1 to 7.
  5. A binary number with four digits has a maximum value of 15.
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Answer:
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  1. False
  2. True
  3. True
  4. False
  5. True
Q3.

What does the base of a number system represent?

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Q4.

What is the maximum value represented by a single digit in the octal system?

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7. The base in an octal number system is 8, therefore, the maximum value of the single digit is 7. It takes digits from 0 to 7.

Q5.

Explain the need of having different number systems.

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