Posts: 298
Threads: 35
Joined: Jan 1970
From the graphical time line I put up some time ago it looks like there may have been a gap in the work load for the engineers just after the HP48S(X), HP17Bii and HP19Bii were launched in 1990. The HP32Sii came out in 1991. Perhaps they spent their time 'improving' the HP32S using some of the styling from the 48 series?
I'd guess soon after the HP32Sii was launched some of the calculator staff were re-allocated to other parts of HP, leaving behind a core staff to look after the HP48 series.
Just a guess by putting 2 and 2 together and getting 5... ;-)