{"id":2051,"date":"2015-03-28T21:55:21","date_gmt":"2015-03-28T21:55:21","guid":{"rendered":"http:\/\/le-rayon-des-calculatrices.fr\/WordPress3\/?p=2051"},"modified":"2025-10-20T19:50:16","modified_gmt":"2025-10-20T19:50:16","slug":"2051","status":"publish","type":"post","link":"https:\/\/le-rayon-des-calculatrices.fr\/WordPress3\/?p=2051","title":{"rendered":"CASIO RM-9800 RM-9850Ga"},"content":{"rendered":"

\"CASIO-TWINCOLOR\"<\/a><\/p>\n

Depuis 2010, les calculatrices de haut de gamme ont franchi l’\u00e9tape de l’\u00e9cran HD<\/em> couleur.<\/p>\n

Les repr\u00e9sentantes de cette technologie sont aujourd’hui les Casio \u00ab\u00a0Prizm\u00a0\u00bbFx-CG10<\/a><\/span><\/em>, Graph-90+E<\/em><\/a><\/span>, Ti n’Spire CX<\/em><\/a><\/span>, Ti-83 Premium CE<\/em><\/a><\/span>, Casio CP-400<\/em><\/span>, HP Prime<\/em><\/span> …<\/p>\n

Une excellente d\u00e9finition d’\u00e9cran au prix d’une consommation \u00e9lev\u00e9e, jusqu’\u00e0 un watt entier pour le CP-400<\/em>. Mais comment revenir aux gros pixels noir & blanc apr\u00e8s avoir go\u00fbt\u00e9 ce luxe ?<\/p>\n

On se souvient que dans les ann\u00e9es 90,\u00a0Casio<\/em> avait invent\u00e9 un \u00e9cran \u00e0 3 couleurs. Le principe ne rencontra pas un succ\u00e8s durable et resta cantonn\u00e9 \u00e0\u00a0une dizaine de mod\u00e8les. Les constructeurs concurrents rest\u00e8rent \u00e0 l’\u00e9cart de cette innovation. Si l’utilit\u00e9 des trois couleurs n’\u00e9tait pas bien d\u00e9montr\u00e9e, au moins, la consommation n’\u00e9tait pas p\u00e9nalis\u00e9e.<\/p>\n

Ce que j’ignorais jusqu’\u00e0 pr\u00e9sent, c’est que deux types d’\u00e9crans \u00e9taient concern\u00e9s : celui de 16 caract\u00e8res de largeur et celui de 21.<\/p>\n

J’ai eu la chance de mettre la main tout r\u00e9cemment sur deux magnifiques machines \u00e9quip\u00e9es de ces \u00e9crans. Elles sont couleur cr\u00e8me, marque des mod\u00e8les \u00e9quip\u00e9s de l’interface vid\u00e9o.<\/p>\n

La RM9800<\/em>, la plus ancienne, poss\u00e8de l’\u00e9cran de 16 caract\u00e8res, contre 21 pour la RM9850Ga<\/em>. Cette derni\u00e8re est une Graph 65<\/em> recarross\u00e9e, et ne se rencontre sous cette forme que munie de l’interface vid\u00e9o. La RM9800<\/em>\u00a0prend visiblement pour base la\u00a0CFX-9800G<\/em>.<\/p>\n

Vingt ans apr\u00e8s, je red\u00e9couvre avec un vrai plaisir ces \u00e9crans aux couleur \u00e9tranges et compl\u00e8tement r\u00e9tro.<\/p>\n","protected":false},"excerpt":{"rendered":"

Depuis 2010, les calculatrices de haut de gamme ont franchi l’\u00e9tape de l’\u00e9cran HD couleur. Les repr\u00e9sentantes de cette technologie sont aujourd’hui les Casio \u00ab\u00a0Prizm\u00a0\u00bbFx-CG10, Graph-90+E, Ti n’Spire CX, Ti-83 Premium CE, Casio CP-400, HP Prime … Une excellente d\u00e9finition d’\u00e9cran au prix d’une consommation \u00e9lev\u00e9e, jusqu’\u00e0 un watt entier pour le CP-400. Mais comment revenir aux gros pixels noir<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,5],"tags":[],"class_list":["post-2051","post","type-post","status-publish","format-standard","hentry","category-casio","category-epoque-moderne"],"_links":{"self":[{"href":"https:\/\/le-rayon-des-calculatrices.fr\/WordPress3\/index.php?rest_route=\/wp\/v2\/posts\/2051","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/le-rayon-des-calculatrices.fr\/WordPress3\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/le-rayon-des-calculatrices.fr\/WordPress3\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/le-rayon-des-calculatrices.fr\/WordPress3\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/le-rayon-des-calculatrices.fr\/WordPress3\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2051"}],"version-history":[{"count":16,"href":"https:\/\/le-rayon-des-calculatrices.fr\/WordPress3\/index.php?rest_route=\/wp\/v2\/posts\/2051\/revisions"}],"predecessor-version":[{"id":8461,"href":"https:\/\/le-rayon-des-calculatrices.fr\/WordPress3\/index.php?rest_route=\/wp\/v2\/posts\/2051\/revisions\/8461"}],"wp:attachment":[{"href":"https:\/\/le-rayon-des-calculatrices.fr\/WordPress3\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2051"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/le-rayon-des-calculatrices.fr\/WordPress3\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2051"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/le-rayon-des-calculatrices.fr\/WordPress3\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2051"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}