Generative Art Timeline · Chapter 2: Modern Era (1850–1949)

1947

Kathleen Booth Writes an Early Assembly Language

Invention · Europe

The Booths' A.P.E.(R.)C. computer, one of their A.P.E.(X).C. family of machines, as the frontispiece of their 1953 book Automatic Digital Calculators.
The Booths' A.P.E.(R.)C. computer, one of their A.P.E.(X).C. family of machines, as the frontispiece of their 1953 book Automatic Digital Calculators. The A.P.E.(R.)C., frontispiece of Andrew D. Booth and Kathleen H. V. Booth, Automatic Digital Calculators (London: Butterworths, 1953). Internet Archive.

Assembly language, a complex computational layer just above binary that every higher-level language leverages, is thus foundational. Along with the ENIAC Six, another often overlooked woman in the history of programming is the English mathematician Kathleen Booth.

At Birkbeck College in London, Booth worked with husband Andrew Donald Booth on their Automatic Relay Calculator, writing Coding for A.R.C. in 1947. It set out a symbolic notation for instructions that stood between the programmer and the machine's raw numbers and counted among the first assembly languages. The Booths went on to build the APE(X)C computers in the early 1950s, with Kathleen Booth later writing one of the first books on programming, Programming for an Automatic Digital Calculator (1958).

Text by Peter Bauman. Generative Art Timeline, Le Random, fact-checked September 2026.

Sources

People

Andrew Donald Booth, Kathleen Booth

Filed under

Ideas
women in computing
Technologies
APEXC, ARC, assembly language, programming
People
Andrew Donald Booth, Kathleen Booth
Organisations
Birkbeck College

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