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2.  What is the another name for Base 2?
                          (i)  Binary number system                        (ii)  Hexadecimal number system

                         (iii)  Decimal number system                      (iv)  Octal number system

                      3.  What are the two symbols present in the binary number system?

                          (i)  1 and 2                                     (ii)  0 and 1

                         (iii)  8 and 9                                    (iv)  5 and 6

                      4.  Which of the following is equivalent to the decimal number (345) ?
                                                                                     10
                          (i)  (101011001)                                 (ii)  (110111001)
                                          2                                                 2
                         (iii)  (111011101)                                (iv)  (111110001)
                                          2                                                 2

                      5.  Which of the following is equal to 0+1 in binary addition?
                          (i)  0                                           (ii)  1

                         (iii)  10                                         (iv)  2

                  B.  State whether these statements are true or false.
                      1.  A number system is a collection of numbers used to describe various quantities.


                      2.  The base of decimal number system is 8.

                      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.  Answer the following questions:

                      1.  What is an octal number system?


                      2.  How many bits are there in 1 nibble?


                      3.  What do you mean by base in a number system?


                      4.  What is number system? Explain.




                      5.  What are the rules to convert a decimal number into a binary number?





                       14    Computer Genius (V2.1)-VII
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