The Museum of HP Calculators

HP Forum Archive 21

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Questions about building a RAM card for hp 48
Message #1 Posted by Waon Shinyoe (China) on 9 July 2013, 9:53 p.m.

I got almost all what I need to build a ram card. But what is the IC exactly? Also, some FAQ mentions that such RAM card may destroy the calculator. Is that true? I follow the guide of

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