A Handheld PC, or H/PC for short, is a term for a computer built around a form factor which is smaller than any standard laptop computer. It is sometimes referred to as a Palmtop. The first handheld device compatible with desktop IBM personal computers of the time was the Hewlett Packard HP 95LX of 1991. Other MS DOS compatible hand-held computers also existed.

Some Handheld PCs run on Microsoft's Windows CE operating system, with the term also covering Windows CE devices released by the broader commercial market.

Source: Wikipedia.org: Handheld PC

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