A handheld computer, also called a palmtop computer, is a term that has variously been used to describe a small-sized personal computer (PC) typically built around a clamshell form factor and a laptop-like keyboard, including: Palmtop PCs, personal digital assistants (PDA), ultra-mobile PCs (UMPC) or portable gaming PCs. The brand Handheld PC specifically is a now-defunct class of computers introduced in the 1990s that was marketed by Microsoft, and is detailed below.
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Handheld computer in the context of Graphing calculator
A graphing calculator (also graphics calculator or graphic display calculator) is a handheld computer that is capable of plotting graphs, solving simultaneous equations, and performing other tasks with variables. Most popular graphing calculators are programmable calculators, allowing the user to create customized programs, typically for scientific, engineering or education applications. They have large screens that display several lines of text and calculations.
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The DragonBall, or MC68328, is a microcontroller design based on the 68000 core, but implemented as an all-in-one 3.3v low-power system for handheld computer use. It is supported by μClinux. It was designed by Motorola in Hong Kong and released in 1995. The series was later owned by Freesale Semiconductor.
The DragonBall's major design win was in numerous devices running the Palm OS platform. However, from Palm OS 5 onwards their use was superseded by ARM-based processors from Texas Instruments and Intel.
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