You mean the Instrumentation Unit on top of the S-IVB stage? That was discarded when the S-IVB and CSM separated shortly after leaving Earth orbit (about 6 hours after launch), so I'm not sure it's accurate to say it's "what actually flew from Earth to the moon". Yes, it put the CSM on the injection orbit, but... A very cool computer (the first one to have all its critical components triplicated for reliabilty, I gather), and yes, it would be nice to have its software too. Noel