Binary Code
Binary is a base-2 number system invented by Gottfried Leibniz that is made up of only two numbers: 0 and 1. This number system is the basis for all binary code, which is used to write data such as the computer processor instructions used every day.
How does binary work?
The 0s and 1s in binary represent OFF or ON, respectively. In a transistor, an "0" represents no flow of electricity, and "1" represents electricity being allowed to flow. In this way, numbers are represented physically inside the computing device, permitting calculation. This concept is further explained in our section on how to read binary numbers.
Why do computers use binary?
Binary is still the primary language for computers for the following reasons.
- It is a simple and elegant design.
- Binary's 0 and 1 method is quick to detect an electrical signal's off or on state.
- The positive and negative poles of magnetic media are quickly translated into binary.
- Binary is the most efficient way to control logic circuits.
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