Solar calculator bought circa 1985. Needs brighter light now, otherwise works perfectly, even in hexadecimal.XS4Me t1_iwwi2fw wrote
Reply to comment by UnclDav in Solar calculator bought circa 1985. Needs brighter light now, otherwise works perfectly, even in hexadecimal. by lake_huron
To be frank, if the lights go out, a regular calculator will also be useless, unless it s display is backlit.
lake_huron OP t1_iwwo938 wrote
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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