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The following table shows positional weight of decimal number (724) .
                                                                                          10

                          Place Value        Weights            Real Value of Each Digit        Units

                          Hundreds           10 2               7 × 10 2                        700

                          Tens               10 1               2 × 10 1                        20

                          Units              10 0               4 × 10 0                        4



                 In this table:
                                                             2
                    The hundreds place has a weight of 10  (100), so the real value is 7 × 100, resulting in 700.
                                                       1
                    The tens place has a weight of 10  (10), so the real value is 2 × 10, resulting in 20.
                                                        0
                    The ones place has a weight of 10  (1), so the real value is 4 × 1, resulting in 4.
                 Adding these results together gives the total value of 724.

                 Binary Number System

                 Computers are made up of tiny parts like transistors, which act as switches that can either be ON
                 or OFF, corresponding to two voltage levels. These two states are represented using the numbers

                 0 and 1, known as binary digits or "bits." Every instruction given to a computer is converted into
                 binary digits so that the computer can process and execute tasks. This system of 0s and 1s is
                 called binary code, which is the fundamental language computers understand.

                 The term 'binary' comes from the prefix 'bi,' meaning two, as seen in words like 'bicycle' (two
                 wheels) or 'binocular' (two eyes). Binary numbers use  a base-2 system,  meaning they are
                 composed only of the digits 0 and 1.

                 An example of a binary number is 110100.

                  Clickipedia



                   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 from the words 'binary digit’.


                 The following table describing various data size units in terms of bits, along with examples:


                               Name           Size (bits)                      Examples

                           Bit                     1         0 or 1
                           Nibble                  4         1101, 1001

                           Byte                    8         11010101, 1001010

                           Word                   16         1101011010110010, 1001011000101101



                                                                                            Number System         9
   6   7   8   9   10   11   12   13   14   15   16