Before I introduce the number systems that are more commonly used in electronics lets discuss a number system that we all are aware of and which we use it everyday.

The

In this number system the radix or the base is 10 since number of digits used is ten.

The general format of decimal number representation is shown below

Where

The

**Decimal number system**got its name because it uses 10 symbols (or popularly digits) for counting and performing operations. It uses the digits 0 to 9.In this number system the radix or the base is 10 since number of digits used is ten.

The general format of decimal number representation is shown below

**10**Weights^{4}10^{3}10^{2}10^{1}10^{0}10^{-1}10^{-2}10^{-3}10^{-4 }← S_{4 } | S_{3 } | S_{2 } | S_{1 } | S_{0 } | . | S_{-1 } | S_{-2 } | S_{-3 } | S_{-4 } |

**↑****↑****↑****MSD Decimal point LSD**

Where

**MSD**is most significant digit (left most digit of a number)**LSD**is the least significant digit (right most digit of a number)**Note:**From the fig we can observe that the MSD has the greatest weight and the LSD have the smallest weight.