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HP Compaq TC1100, 2003
This HP Compaq device — the TC1100 — was seen by many as one of the more successful Tablet PCs. Indeed, some industry watchers would still like to see it return.
NEC Versa T400, 2003
Pictured above is the NEC Versa T400 from 2003, hailed as "the thinnest and lightest Tablet PC we've seen so far" by ZDNet, although battery life and performance was a concern.
Tablet PC, 2005
While Microsoft and its hardware partners continued to push Tablet PC hardware (such as in this stunt where cartoonists drew caricatures using the device) they failed to gain much traction beyond particular business niches.