A statistician coined the word 'bit' as a memo shorthand
In 1946, statistician John Tukey wrote a Bell Labs memo suggesting "bit" as a contraction for "binary digit." He considered awkward alternatives like "bigit" and "binit" before deciding on the crisper three-letter term. Information theorist Claude Shannon formally adopted Tukey's coinage in his landmark 1948 paper, transforming what began as casual lab shorthand into the fundamental unit of all digital computing and communication.
A Casual Memo at Bell Labs
In the middle of the twentieth century, researchers working at the intersection of mathematics, telecommunications, and early electronic computing faced an awkward terminological problem. Engineers and theorists were increasingly working with two-state systems—circuits that were either on or off, relays that were open or closed, and mathematical notations composed purely of zeros and ones. Constantly repeating the phrase 'binary digit' in internal technical memos and working papers proved cumbersome.
In January 1947, statistician John Wilder Tukey, who was working at Bell Telephone Laboratories, addressed this clunkiness directly in an internal memorandum. Looking for an efficient contraction, Tukey explored several potential combinations of 'binary' and 'digit', including alternatives like 'bigit' and 'binit'. Ultimately, he settled on the crisper, three-letter blend: 'bit'. The term combined the starting letters of 'binary' and the final letter of 'digit', while conveniently echoing the existing English word meaning a small piece of something.
At the time, Tukey's coinage was simply a piece of practical workplace shorthand intended to make technical memos easier to write. It was neither protected by patents nor immediately announced to the public as a scientific breakthrough. Instead, it circulated informally among researchers at Bell Labs who were grappling with the design of early electronic computers and communication channels.
Shannon's Formal Adoption
The informal term leaped from lab shorthand into international science through Claude Shannon's landmark 1948 paper, 'A Mathematical Theory of Communication'. Shannon, also working at Bell Labs, set out to construct a rigorous mathematical framework for measuring, transmitting, and compressing information. Central to his theory was finding a universal metric for quantifying information, regardless of whether that information took the form of spoken audio, written text, or telegraph signals.