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    OCTAL NUMBER SYSTEM
                      A number system made up of eight digits from 0 to 7, is known as the octal number system. When

                      the octal number system is used, every number is formed using 0,1,2,3,4,5,6 and 7. The base of
                      the octal number system is 8. It is also known as the base-8 system. Each positioning number
                      represents the power of base 8. The place value of the digits according to position and weight is
                      as follows:

                         Position          2              1            0                            -1            -2
                                                                                      .
                         Weights           8 2           8 1           8 0                         8 -1          8 -2

                      For example: (1763) 8

                             3
                                      2
                                                1
                      = (1 x 8 ) + (7 x 8 ) + (6 x 8 ) + (3 x 8 )
                                                          0
                      = (1 x 512) + (7 x 64) + (6 x 8) + (3 x 1)
                      = 512 + 448 + 48 + 3
                      = 1011 or (1011) 10

                      HEXADECIMAL NUMBER SYSTEM
                      A number system made up of sixteen symbols, 0 to 9, and A to F is known as the hexadecimal
                      number system. When the hexadecimal number system is used, every number is formed using 0,
                      1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E and F, where A = 10, B = 11, C = 12, D = 13, E = 14, and F = 15. The base
                      of the hexadecimal number system is 16. It is also known as the base-16 system. Each position

                      represents a power of base 16. The place value of the digits according to position and weight is as
                      follows:

                         Position          2              1            0              .             -1            -2

                         Weights          16 2           16 1          16 0                        16 -1         16 -2

                      For Example: (2AF)  16

                                                   0
                                         1
                              2
                      = (2 x 16 ) + (A x 16 ) + (F x 16 )
                      = (2 x 256) + (10 x 16) + (15 x 1)
                      = 512 + 160 + 15

                      = 687

                      The hexadecimal  number  system  has  made  the  representation  of  large  values  easy.  The
                      hexadecimal numbers are used to represent colours on a webpage, that's why programmers
                      now prefer hexadecimal numbers. Some examples of colour code are:

                         Red: #FF0000
                         Green: #00FF00

                         Blue: #0000FF

                       10   Premium Edition-VII

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