This page documents an OPTIMADE Unit Definition. See https://schemas.optimade.org/ for more information.

**ID: https://schemas.optimade.org/defs/v1.2/units/independent/1948/information/bit**

`bit`

**Unit name:** bit

**Latin symbol:** bit

**Display symbol:** bit

**Description:** A basic unit of digital information representing a single logical state with one of two possible values, defined by Shannon in 1948.

"If the base 2 is used the resulting units may be called binary digits, or more briefly bits, a word suggested by J. W. Tukey. A device with two stable positions, such as a relay or a flip-flop circuit, can store one bit of information." ["A Mathematical Theory of Communication", C. E. Shannon, The Bell System Technical Journal 27, 379 (1948)].

**Resources:**

- Defining paper: "A Mathematical Theory of Communication" by C. E. Shannon, The Bell System Technical Journal, Vol. 27, pp. 379–423 (1948).
- Wikipedia article describing the unit

**JSON definition:**

```
{
"$id": "https://schemas.optimade.org/defs/v1.2/units/independent/1948/information/bit",
"$schema": "https://schemas.optimade.org/meta/v1.2/optimade/physical_unit_definition.json",
"title": "bit",
"symbol": "bit",
"display-symbol": "bit",
"description": "A basic unit of digital information representing a single logical state with one of two possible values, defined by Shannon in 1948.\n\n\"If the base 2 is used the resulting units may be called binary digits, or more briefly bits, a word suggested by J. W. Tukey. A device with two stable positions, such as a relay or a flip-flop circuit, can store one bit of information.\" [\"A Mathematical Theory of Communication\", C. E. Shannon, The Bell System Technical Journal 27, 379 (1948)].",
"resources": [
{
"relation": "Defining paper: \"A Mathematical Theory of Communication\" by C. E. Shannon, The Bell System Technical Journal, Vol. 27, pp. 379\u2013423 (1948).",
"resource-id": "https://doi.org/10.1002/j.1538-7305.1948.tb01338.x"
},
{
"relation": "Wikipedia article describing the unit",
"resource-id": "https://en.wikipedia.org/wiki/Bit"
}
],
"x-optimade-definition": {
"label": "bit_independent_1948_information",
"kind": "unit",
"format": "1.2",
"version": "1.2.0",
"name": "bit"
}
}
```