Calculators in space with Sally Ride (1983)

[jonmoore]

(06-19-2022 09:23 AM)pier4r Wrote:  I see 3 calculators, maybe there are more. I would bet all 3 are HP ones but I cannot identify the models (as I am not a good collector). Which models were and for what were they used? (I expect for backup routines). Also somehow I have the impression they added colored labels? It seem the same model - at least due to the position of the large key and the yellow one above it - but the colors are different for other keys and labels.

They were all HP41's, but each with a custom overlay.

This more recent thread has some great background info, including the actual handbook that details the custom programs NASA developed for the 41's.

https://www.hpmuseum.org/forum/thread-18312.html

http://hp65.genedorr.com/documents/JSC-18778.pdf