How they built the software of Apollo 11

August 30, 2009

The software used a low-level assembly language and was controlled using pairs or segments of numbers entered into a square-shaped, numeric-only keyboard called a Display and Keyboard Unit, or DSKY, inside each the Apollo capsule and the Lunar Module. The two-digit codes stood for "nouns" or "verbs," and were used to enter commands (verbs) or data (nouns), such as spacecraft docking angles or time spans for operations.

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