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The Newton is a series of personal digital assistants developed and marketed by Apple Inc. An early device in the PDA category – the Newton originated the term "personal digital assistant" – it was the first to feature handwriting recognition. Apple started developing the platform in 1987 and shipped the first devices 1993; production officially ended on February 27, 1998. Newton devices run on a proprietary operating system, Newton OS; examples include Apple's MessagePad series and the eMate 300, and other companies also released devices running on Newton OS. Most Newton devices were based on the ARM 610 RISC processor and all featured handwriting-based input. The Newton was considered technologically innovative at its debut, but its high price and early problems with its handwriting recognition feature limited its sales. Apple cancelled the platform at the direction of Steve Jobs in 1998. ==Development== The Newton project was a personal digital assistant platform. The PDA category did not exist for most of Newton's genesis, and the phrase "personal digital assistant" was coined relatively late in the development cycle by Apple's CEO John Sculley, the driving force behind the project. Larry Tesler determined that a powerful, low-power processor was needed for sophisticated graphics manipulation. He found Hermann Hauser, with the Acorn RISC Machine (ARM) processor, and put together Advanced RISC Machines (now ARM Holdings). Newton was intended to be a complete reinvention of personal computing. For most of its design lifecycle Newton had a large-format screen, more internal memory, and an object-oriented graphics kernel. One of the original motivating use cases for the design was known as the "Architect Scenario", in which Newton's designers imagined a residential architect working quickly with a client to sketch, clean up, and interactively modify a simple two-dimensional home plan. There is, however, an extensive history of pen computing that predates the Newton, though not generally in the form of what would now be called a PDA. For a portion of the Newton's development cycle (roughly the middle third), the project's intended programming language was Dylan, a language Apple created for this platform, though in fact the language and environment never matured enough for any applications to be successfully written. Dylan never lived up to its developers' performance expectations. When the move was made to a smaller design (designed by Jonathan Ive), Dylan was relegated to experimental status in the "Bauhaus Project" and eventually canceled outright. Its replacement, NewtonScript, had garbage collection and tight integration with the "soup" storage and user-interface toolkit, and was specifically designed to run in small RAM/large ROM environments. It was mostly developed by Walter Smith from 1992 to 1993. The project missed its original goals to reinvent personal computing, and then to rewrite contemporary application programming. The Newton project fell victim to project slippage, scope creep, and a growing fear that it would interfere with Macintosh sales. It was reinvented as a PDA platform which would be a complementary Macintosh peripheral instead of a stand-alone computer which might compete with the Macintosh. Although PDAs had been developing since the original Psion Organiser in 1984,〔(【引用サイトリンク】title=PDA )〕〔(History of PDAs blog )〕 the Newton has left one particular lasting impression: the term ''personal digital assistant'' was first coined to refer to the Newton.〔 According to former Apple CEO John Sculley, the corporation invested approximately US$100M to develop Newton. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Apple Newton」の詳細全文を読む スポンサード リンク
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