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    e.  The octal number system consists of ____________ digits.

                        f.  Computer system understands ____________ numbers.
                     4.  Short answer type questions.
                        a.  What is an octal number system?

                             ______________________________________________________________________________

                        b.  How many bits are there in 1 nibble?
                             ______________________________________________________________________________

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

                     5.  Long answer type questions.
                        a.  What is number system? Explain.
                        b.  What are the rules  to convert a decimal number into a binary number?

                        c.  Write the rules to subtract two binary numbers.

                                                                                            fun Zone

                                                                                                          Critical Thinking
                        Let's soLve

                         Solve the crossword by filling it with equivalent decimal numbers or binary numbers.

                         Down                                                           1
                           1.  (10101)                                          3
                                    2
                          3.  (1111011) 2                 2                     1       1

                          5.  (361) 10                                                  5
                          7.  (6) 10                                        4  3        1

                         Across                                                                               7

                          2.  (101)                                                  6  1
                                  10
                          4.  (100101101) 2                                         8   1                     1
                          6.  (1100) 2

                          8.  (165) 10                                          9
                          9.  (1010001)
                                       2                                       10
                         10.  (1101010)                                                 0
                                      2

                         Let's exPLore                                                                 Experiential Learning

                           Surf the Internet to find out the uses  of the various number systems in different  types  of
                         scenarios. Discuss with your teacher.

                                                                                                      Number System    15

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