The count-PC also gives you a program for the security PC's later for even more PC and more programs...
The Numbers puzzle and the Vogga's warehouse were not really hard anyway (some find the first bugged though, when both answers end up wrond)
The A,B,C,D,E puzzle in the Dxun Tomb is really irritating though, so press and reload if wrong was my way "
The Count-PC is 2 as you enter and not killed any droids, so I always do it right away with this number (how does that ONE-etc. thing works then?)