Mondo Knows Facts

Grace Hopper created the first compiler for a programming language

In 1952 Grace Hopper developed A-0 to translate human-readable code into computer machine instructions

Rear Admiral Grace Hopper developed the A-0 system, which converted mathematical symbols into machine code for the UNIVAC I computer. Her work pioneered the concept of compiled programming languages, paving the way for COBOL and modern software development. She advocated writing code using English-like words rather than raw machine instructions.

GraceHopper2 photograph
James S. Davis ยท Public domain ยท source

Where this comes from

Navy History and Heritage Command

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

Go further

More facts like this

Tags: software, compiler, programming

Grace Hopper created the first compiler for a programming language: the short answers

Where does this come from, and can I check it?
In 1952 Grace Hopper developed A-0 to translate human-readable code into computer machine instructions. The figure is taken from Navy History and Heritage Command, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a technology fact?
Yes. It sits on the Technology shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?
The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.