Zero may refer to any of the following:
1. Zero is a numerical value represented as "0" that is equal to nothing and is not negative or positive.
Note: Depending on a font it can be easy to confuse the capital letter "O" in the English language with the number "0". If the font does not put a dot in the middle of the zero, it will typically be thinner than the letter "O."
Tip: Some people and programs may write a zero with a slash though the zero to help identify it as a zero and not the letter "O."
2. In binary, 0 is equal to Off.