This is a piece of an unflown Apollo Guidance Computer's Display Keyboard (DSKY) made by Raytheon. It lights showed the status of the computer and navigation system. The Display Keyboard was the method by which Apollo astronauts communicated with the computers on board the Apollo Command and Lunar Modules. A Command Module had two DSKYs on board; the Lunar Module had one, identical DSKY. In addition to these status lights, the DSKY had a simple numerical keyboard and a set of lighted numerical indicators.
Although the three DSKYs flown on a mission were essentially identical, the status lights for the DSKYs in the Command Module differed slightly from those in the Lunar Module. Based on other units in the collection, it is likely that this is a part of a DSKY intended for use on a Command Module.
Transferred from NASA to the Museum in 1996.