Page 32 - Computer Class 06

8 We use a number system in which there are 10 different symbols.

8 The number system that we use in our day-to-day life is the decimal number.
8 To convert a binary number into octal, divide it into groups of three digits starting
from right to left.

8 In binary subtraction 0-1=1 with a borrow taken from next place i.e. left digit.
8 0 or 1 divided by 0 has no meaning as in the decimal system.

Objective Type Questions

A. Tick ( ) the correct one.3
1. How many different symbols are there in the number system?

a) 9 b) 10
c) 11 d) 12
2. Convert the binary number (1011010) to hexadecimal.

a) 5A b) 5B
c) 5c d) 5D

3. Binary addition involves addition of two ____________ numbers.
a) binary b) decimal
c) octal d) hexadecimal

4. Binary arithmetic operations starts from the ____________ most side.
a) left b) right
c) center d) bottom

B. Write True or False .
1. The computer does not understand the decimal number system.

2. 1 + 0 = 0 is binary addition.
3. 0 - 1 = 1 with a borrow taken from next place i.e. left digit in binary.
4. Binary addition is performed in the same manner as decimal addition.

5. Binary subtraction is similar to the decimal number system.

C. Fill in the blanks.
1. 0 or 1 divided by ____________ has no meaning.
2. To convert any decimal number to hexadecimal, divide the number with the base
____________.

Computer-6 32 Computer-1