Augusta Ada King, Countess of Lovelace, wrote extensive notes on Charles Babbage’s proposed Analytical Engine and recognized that such a machine could manipulate symbols as well as numbers.

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Overview

Ada Lovelace was a British mathematician and writer. Her best-known work grew from a translation of an article about Charles Babbage’s Analytical Engine, to which she added a much longer series of original notes.1

The Analytical Engine notes

Lovelace’s notes included a published algorithm for the proposed machine. She also described a broader possibility: that a general-purpose machine could work on symbols representing things beyond quantity, including music.1

Evidence

Sources

1 reviewed sources
  1. 1
    Ada Lovelace: visionary of the computer age

    Science Museum Group · Website · Retrieved 22 August 2026

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