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3. Which of the following are the two symbols present in the binary number system?
a. 1 and 2 c. 0 and 1
b. 8 and 9 d. 5 and 6
4. The decimal number (345) is equivalent to .........................
10
a. (101011001) c. (110111001)
2 2
b. (111011101) d. (111110001)
2 2
B. Write ‘T’ for true and ‘F’ for false.
1. A number system is simply a manner of counting. ........................
2. The base of decimal number system is 10. ........................
3. The word binary comes from 'Bi-' meaning two. ........................
4. The octal number system is used as a shorthand representation of long
binary numbers. ........................
5. The hexadecimal number system consists of 16 digits. ........................
C. Fill in the blanks using the words given below:
Hints
binary, 2, 8, 10, decimal number
1. The base of binary number system is .........................
2. The base of ........................ system is 10.
3. In binary addition, 1 + 1 is equal to .........................
4. The octal number system consists of ........................ digits.
5. Computer system understands ........................ numbers.
D. Short answer type questions.
1. What is an octal number system?
...........................................................................................................................................................................
2. How many bits are there in 1 nibble?
...........................................................................................................................................................................
3. What is base in number system?
...........................................................................................................................................................................
E. Long answer type questions.
1. What is number system? Explain.
2. What are the rules to convert a decimal number into a binary number?
3. Write the rules to add two binary numbers.
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