In ancient time, when man first created the numeric system, they came up with the idea of counting with their fingers. Humans have only 10 fingers, therefore initially they were limited by this. So the decimal numeral system was born, which counts from 0 to 10, and continues after every 10's.
When electronics started to surface, human realized that decimal is too much for machines to decipher. Human is logical and rational; machines are logical but not rational. We understand what is wrong and what is right, what are the limits for certain situations. Machines know only two things: true or false.
Hence, a new numeral system must be created for both machine and human to understand and communicate with each other. The binary numeral system was the solution.
