Found this old gem today... Vintage Casio SF-4000 'digital diary' from 1988. Featuring a whole 31,902 characters of battery backed storage. : r/retrobattlestations
digital diary casio sf-4000 - Acheter Articles d'électronique d'occasion sur todocoleccion
digital diary casio sf-3700er - Acheter Calculatrices anciennes sur todocoleccion
MyCalcDB : Calculatrice Casio SF-4000 aussi nommé DIGITAL DIARY
CASIO SF-4000 DIGITAL Diary / Vintage Calculator Big Display Compact Pocket Data EUR 40,00 - PicClick FR
CALCULATRICE VINTAGE CASIO Digital Diary SF-3300ER BU-S 32 Ko conversion euro EUR 15,06 - PicClick FR
Casio Digital Diary SF-4000 Vintage | eBay
Casio SF-4000 digital diary teardown | KuzyaTech
CASIO DIGITAL DIARY SF-4000 Vintage Organizer Base de données Calculatrice... EUR 27,61 - PicClick FR
Casio Digital Diary SF-4000 Vintage | eBay
Casio - SF-4000 - - Digital Diary - Casio SF4000 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
VTG Casio Digital Diary SF- 4000 w/Manual Good Condition Org. Owner Not Tested | eBay
CASIO DIGITAL DIARY SF 7500 - 64 Kb organiseur agenda électronique. neuf . EUR 100,00 - PicClick FR