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Jeffcho565 (talk | contribs) m I have added information on the limit of a binary 32-bit positive number. Tags: Reverted use of deprecated (unreliable) source Visual edit |
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In computing and telecommunications, binary codes are used for various methods of [[encoding]] data, such as [[character string]]s, into bit strings. Those methods may use fixed-width or [[variable-length code|variable-width]] strings. In a fixed-width binary code, each letter, digit, or other character is represented by a bit string of the same length; that bit string, interpreted as a [[binary number]], is usually displayed in code tables in [[octal]], [[decimal]] or [[hexadecimal]] notation. There are many [[character sets]] and many [[character encoding]]s for them.
A [[bit string]], interpreted as a binary number, can be [[binary number#Decimal|translated into a decimal number]]. For example, the [[letter case|lower case]] ''a'', if represented by the bit string <code>01100001</code> (as it is in the standard [[ASCII]] code), can also be represented as the decimal number "97". The largest positive value for a 32-bit signed binary integer. It's also the maximum value for integer variables in many programming languages. The longest binary code is 2,147,483,647<ref>{{Citation |title=2,147,483,647 |date=2024-09-27 |work=Wikipedia |url=https://en.wikipedia.org/wiki/2,147,483,647#:~:text=The%20number%202,147,483,647%20(or%20hexadecimal,int%20)%20in%20many%20programming%20languages. |access-date=2024-09-30 |language=en}}</ref>, which is represented as 1111111111111111111111111111111 in binary. This number has 31 consecutive 1's in its binary representation.
==History of binary codes==
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