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
Casio SF-4000 Digital Diary Organizer Calculator Calendar Made in Japan WORKING | eBay
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Casio Digital Diary SF-4000 Made in Japan with Operation Manual ** Not Working | eBay
CASIO SF-4000 DIGITAL Diary / Vintage Calculator Big Display Compact Pocket Data EUR 40,00 - PicClick FR
MyCalcDB : Calculatrice Casio SF-4000 aussi nommé DIGITAL DIARY
Casio Digital Diary SF-4000 Vintage | eBay
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MyCalcDB : Calculatrice Casio SF-4000 aussi nommé DIGITAL DIARY
VTG Casio Digital Diary SF- 4000 w/Manual Good Condition Org. Owner Not Tested | 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
CALCULATRICE VINTAGE CASIO Digital Diary SF-3300ER BU-S 32 Ko conversion euro EUR 15,06 - PicClick FR
Mode emploi casio sf-4000
Casio SF-4000 digital diary teardown | KuzyaTech
CASIO DIGITAL DIARY SF-4000 PERFECT clean and tested Made in Japan EUR 29,00 - PicClick FR