Columbia subject headings:
Calculators--History.
Computers--History.
Lovelace, Ada King, Countess of, 1815-1852.
Mathematicians--Great Britain--Biography.
Harvard subject headings:
Calculators--History
Computers--History
Lovelace, Ada King, Countess of, 1815-1852
Mathematicians--Great Britain--Biography
Women mathematicians--Great Britain--Biography.
Princeton subject headings:
Calculators--History.
Computers--History.
Lovelace, Ada King, Countess of, 1815-1852.
Mathematicians--Great Britain--Biography.