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There is another way then using ones, tens, hundreds, and thousands like in the decimal system. These numbers are built out of the powers in the binary system like 1, 2, 4, 8, 16, 32, 64, 128, 256 so on and so forth. There are only to digits in the binary system: {0, 1}. This is the system that computers and calculators work with because electric devices only understand electricity on (1) and electricity off (0). The numbers are written like in the following example: E.g. the number 7:
The number 7 is written: 1112 in the binary system. If you should want to display the number 5, only the numbers 4 and 1 are needed. 2 is not necessary. This still has to be stated. 5 is written: 1012
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