Solar calculator bought circa 1985. Needs brighter light now, otherwise works perfectly, even in hexadecimal.lake_huron OP t1_iwwo938 wrote
Reply to comment by XS4Me in Solar calculator bought circa 1985. Needs brighter light now, otherwise works perfectly, even in hexadecimal. by lake_huron
Lots of old ones had LED displays, although you wouldn't be able to see the keys.
This was my previous calculator:
http://www.vintagecalculators.com/html/texas_instruments_ti-30.html
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