Extremely important original Block II Apollo Guidance computer display and keyboard (DSKY) unit, intended for application onboard the Apollo Command Module and Lunar Module. The data entry and display device measures 8 x 8 x 6.5, and has 19 keys and a digital display. The back of the unit retains its NASA Raytheon Co. metal label which reads, “Apollo G & N System…Part No. 2003985-051, Serial No. RAY 12, NAS 9-497." A NASA property tag is affixed above, reading: "NASA Property, North American Aviation, Inc., F340463." This interface was the instrument that allowed the astronauts to communicate directly with the on board guidance computer. The Command Module had two DSKYs connected to its AGC; one located on the main instrument panel and a second located in the lower equipment bay near a sextant used for aligning the inertial guidance platform, with a single DSKY installed in the Lunar Module. These units would also be used during the Skylab missions. In overall fine condition.
Training on the DSKY was critical for every aspect of the mission. This was the astronaut's interface, allowing access to the Apollo Guidance Computer developed by MIT. The device permitted the astronauts to collect and provide flight information necessary for the precise landings on the moon. Each different program had a two-digit code and commands were entered as two-digit numbers in a verb-noun sequence. It was the DSKY that provided the astronauts with critical burn times for engine firings, course corrections, trajectories, and other key calculations vital in getting a crew to and from the moon. The DSKY also reported the program alarm moments before the LM touched down on the lunar surface on the first lunar landing. Crucial to the success of the Apollo program, this is a remarkable example of the innovation required for reliable manned spaceflight.
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