Lovelace's table describing the Bernoulli number routine, from Note G. Each line follows the input and output from a step in the routine. Columns indicate what each part of the machine is doing at each step.

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1. Robert McNees (mcnees@mastodon.social)'s status on Saturday, 10-Dec-2022 17:10:32 UTC Robert McNees

   in reply to

   One argument for referring to Lovelace as the "first computer programmer" is that the routine presented in Note G has an important feature in common with just about every subsequent computer program: a bug.

   Operation 4 is listed in the manuscript as the division ²V₅ / ²V₄. It should have read ²V₄ / ²V₅.

   However, this was likely a typo during typesetting rather than a bug in the original code. Still, a familiar problem for anyone who every typed code from a magazine into a computer.