I have no answer, but if I point out that the OS on the hp IPAQ is Windows Mobile 6.1 Professional it might help others. Unfortunately various mobile versions of Adobe Reader have started with 1.0.
When someone says PPC I think of a Power PC Apple Mac, but that doesn't seem to be the same thing at all.
Actually, no, I think you're right.
PPC is Pocket PC (not a generic tablet, but a Microsoft name) http://en.wikipedia.org/wiki/Pocket_PC
PPC is Power PC (the name of the chip inside older Macintosh computers) http://en.wikipedia.org/wiki/PowerPC
And it's many more things... http://en.wikipedia.org/wiki/PPC_(disambiguation)
Best to just call it an IPAQ! Except that an IPAQ was both a regular PC and a tablet... http://en.wikipedia.org/wiki/IPAQ
(Interesting, I just learned a bunch of new stuff)