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The following table shows positional weight of decimal number (724) .
                                                                                     10
                                                           Hundreds             Tens             Units
                         Weights                              10 2               10 1             10 0

                         Real Value of each digit           7 × 10 2           2 × 10 1          4 × 10 0

                         Result                               700                20                 4


                      Binary Number System

                 The word binary comes from 'Bi' meaning two. We see 'bi' in words such as ‘bicycle‘ (two wheels) or
                 ‘binocular’ (two eyes). The binary numbers have the base of 2.



                                                           Tech Fact
                    A single binary digit (like '0' or ‘1’) is called a ‘bit’. For example, 11010 is five bits long. The word
                                              bit is made up of the words 'binary digit’.



                 Computers are made up of tiny parts like transistors and switches that can be either ON or OFF.
                 These two states are shown using the numbers 0 and 1, called binary digits. Every instruction given
                 to a computer is turned into these binary digits so the computer can understand and carry out the
                 task. This system of 0s and 1s is called binary language, which is the basic language that computers
                 understand.
                 A binary number is made up of only 0s and 1s.
                 Example of Binary Number: 110100

                 There is no 2, 3, 4, 5, 6, 7, 8 or 9 in Binary.

                  Name Size (bits)                  Examples

                  Bit           1      0 or 1                                   The decimal number system is based
                                                                                 on ten digits, likely influenced by the
                  Nibble       4       1001, 1011                                     number of human fingers.

                  Byte         8       11001001, 00110011

                  Word         16      1010101010101010, 1111000011110011




                                                           Tech Fact
                        If the last digit of a binary number is 1, the number is odd; if it is 0, the number is even.
                                                            For Example:

                                                 1101 represents an odd number (13)

                                               10010 represents an even number (18)






                                                                                                  Number System    9
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