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For example, let us subtract the binary number (111)  from (1000) .
                                                                       2
                                                                                     2
                                                          1     1
                                                                         _____
                                                     0  (10)  (10)  (10)       Borrow
                                                     1    0    0     0
                                                 –        1     1    1

                                                     0    0    0     1



                                                                                                         21 st
                                                          Self Reflection                              Century   #Initiative
                                                                                                        Skills
                    Your classmate is facing trouble to understand the different number systems. He is having a hard time doing
                                                          Self Reflection
                    calculations and converting numbers into different number systems. Will you help him by teaching all the
                    steps in detail?




                        Hashtag


                      # Number System: Way to express quantities used for counting, comparing amounts, performing
                       calculations and representing values
                      #Conversion: Process of changing or causing something to change from one state to another





                      REVISIT



                   ▶   The smallest piece of data that can be recognised and used by the computer is known as a bit or a binary
                     digit.
                   ▶   A number system is a way to express quantities used for counting, comparing amounts, performing
                     calculations and representing values.
                   ▶   A number system made up of ten symbols, 0 to 9, is known as the decimal number system.
                   ▶   A number system made up of only two symbols, 0 and 1, is known as the binary number system.
                   ▶   A number system made up of eight symbols, 0 to 7, is known as the octal number system.
                   ▶   A number system made up of sixteen symbols, 0 to 9, and A to F, is known as the hexadecimal number system.












                 1.  Tick ( ) the correct option.

                    a.  Which number represents the base of the binary number system?
                        (i)  2                                            (ii)  8

                       (iii)  10                                          (iv)  16



                                                                                                  Number System   13
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