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Erable is a computer algebra system (CAS) for a family of Hewlett-Packard graphing scientific calculators of the HP 40, 48 and HP 49/50 series. ==History== Originally named ''ALGB'' in 1993, it was developed by the French mathematician Bernard Parisse for the HP 48SX. Over time, the system integrated a lot of functionality from another math pack for the HP 48 series, ALG48 by Mika Heiskanen and Claude-Nicolas Fiechter. At some point, ''ALGB'' was renamed into ''Erable'', a French play-on-words on another CAS named Maple. Compatible with the HP 48S, 48SX, 48G, 48G+, 48GX, Erable became one of the "must-have" software packages to be installed by advanced users of these calculators. When Hewlett-Packard developed the HP 49G in 1999, the Erable and ALG48 packages became an integral part of the calculator's firmware, now just named ''HP CAS''. As HP CAS it also showed up in the HP 40G, 40gs, 49g+, 48gII and 50g and was maintained by Parisse up to 2006. Based on his experiences with Erable, Parisse started developing a new and more general CAS system named Xcas / Giac in 2000. It is written in C++ rather than System RPL. This system was integrated into the HP Prime in 2013 under a dual-license scheme. 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「Erable」の詳細全文を読む スポンサード リンク
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