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The Gakken EX-System is a series of educational electronics kits produced by Gakken in the late 1970s. The kits use denshi blocks (also known as ''electronic blocks'') to allow electronics experiments to be performed easily and safely. Over 25 years after its original release, one of the main kits from the series was reissued in Japan in 2002. ==History== A brief timeline: ; 1972: Gakken and Denshi Block Mfg. Co. Ltd. collaborate to release denshi block kits under Gakken's name. ; 1976: The EX series was released. ; 1981: The successor to the EX series, the FX series, is released. ; 1986: Gakken stops producing denshi block kits. ; 2002: The EX-150 is reissued in Japan, and is successful enough to justify the production of an expansion kit. ; 2011: Gakken releases a small kit compatible with the EX-system, #32 in their "Otona no Kagaku" mook series. 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「Gakken EX-System」の詳細全文を読む スポンサード リンク
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