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https://makezine.com/article/education/in-the-maker-shed-ex-150-electronic-2/
In the Maker Shed: EX-150 Electronic Experiment kit - Make:
Feb 2, 2011 - Great for learning electronics and circuit design! The Gakken EX System is a series of educational electronics kits produced in the late 1970s. The kits
electronic experiment kitin themaker shed
https://makezine.com/article/education/in-the-maker-shed-ex-150-electronic-experiment-kit/
In the Maker Shed: EX-150 Electronic Experiment kit - Make:
Apr 11, 2011 - The Gakken EX System was a series of educational electronics kits that were produced in the late 1970s. The kits uses "denshi blocks" (also known as
electronic experiment kitin themaker shed