Binary numeral system

The binary numeral system is a way of counting and writing numbers using only two digits: 0 and 1. Instead of a decimal system (the one most people are used to), which has 10 different digits (0, 1, 2, 3, 4, 5, 6, 7, 8, 9), the binary system only has two. This makes it easier for computers to store information, because it is easier for computers to process the ones and zeros. To make a bigger number, like 9 (in the decimal system), we just stack up more ones and zeros: 8 is written 1000 in binary, 7 is written 0111, 6 is written 0110, and so on.