![RetroComputerClub on Twitter: "#Commodore US1 #calculator (1972-1975) #vintagecalculator #vintagecomputing #70s #led #vfd #bitstory https://t.co/xAwznnaeGV" / Twitter RetroComputerClub on Twitter: "#Commodore US1 #calculator (1972-1975) #vintagecalculator #vintagecomputing #70s #led #vfd #bitstory https://t.co/xAwznnaeGV" / Twitter](https://pbs.twimg.com/media/Do0gaohXUAETdCa.jpg:large)
RetroComputerClub on Twitter: "#Commodore US1 #calculator (1972-1975) #vintagecalculator #vintagecomputing #70s #led #vfd #bitstory https://t.co/xAwznnaeGV" / Twitter
![Vintage APF Mark 25/Memory Electronic Pocket Calculator, VFD, Made In Japan, Circa 1975 | Pocket calculators, Calculator, Vintage Vintage APF Mark 25/Memory Electronic Pocket Calculator, VFD, Made In Japan, Circa 1975 | Pocket calculators, Calculator, Vintage](https://i.pinimg.com/736x/0f/51/bd/0f51bdf3a9cd7a845ffa6ca5c8f6207e---circa.jpg)
Vintage APF Mark 25/Memory Electronic Pocket Calculator, VFD, Made In Japan, Circa 1975 | Pocket calculators, Calculator, Vintage
![File:Vintage Unisonic Electronic Pocket Calculator, Model 890C, VFD (Vacuum Fluorescent) Display, Sealed Battery Pack, Made In Japan, Circa 1975 (16390017822).jpg - Wikimedia Commons File:Vintage Unisonic Electronic Pocket Calculator, Model 890C, VFD (Vacuum Fluorescent) Display, Sealed Battery Pack, Made In Japan, Circa 1975 (16390017822).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/6/66/Vintage_Unisonic_Electronic_Pocket_Calculator%2C_Model_890C%2C_VFD_%28Vacuum_Fluorescent%29_Display%2C_Sealed_Battery_Pack%2C_Made_In_Japan%2C_Circa_1975_%2816390017822%29.jpg/1923px-Vintage_Unisonic_Electronic_Pocket_Calculator%2C_Model_890C%2C_VFD_%28Vacuum_Fluorescent%29_Display%2C_Sealed_Battery_Pack%2C_Made_In_Japan%2C_Circa_1975_%2816390017822%29.jpg)
File:Vintage Unisonic Electronic Pocket Calculator, Model 890C, VFD (Vacuum Fluorescent) Display, Sealed Battery Pack, Made In Japan, Circa 1975 (16390017822).jpg - Wikimedia Commons
![File:Vintage Bohn Omnitrex Electronic Pocket Calculator, Made In Taiwan, VFD, Circa 1973 (15992278795).jpg - Wikimedia Commons File:Vintage Bohn Omnitrex Electronic Pocket Calculator, Made In Taiwan, VFD, Circa 1973 (15992278795).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/d/db/Vintage_Bohn_Omnitrex_Electronic_Pocket_Calculator%2C_Made_In_Taiwan%2C_VFD%2C_Circa_1973_%2815992278795%29.jpg)
File:Vintage Bohn Omnitrex Electronic Pocket Calculator, Made In Taiwan, VFD, Circa 1973 (15992278795).jpg - Wikimedia Commons
![File:Vintage Qualitron Electronic Pocket Calculator, Model 2446R, aka Slide Rule, VFD, Sealed Battery, Made In Taiwan (14176731331).jpg - Wikimedia Commons File:Vintage Qualitron Electronic Pocket Calculator, Model 2446R, aka Slide Rule, VFD, Sealed Battery, Made In Taiwan (14176731331).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/7/79/Vintage_Qualitron_Electronic_Pocket_Calculator%2C_Model_2446R%2C_aka_Slide_Rule%2C_VFD%2C_Sealed_Battery%2C_Made_In_Taiwan_%2814176731331%29.jpg)
File:Vintage Qualitron Electronic Pocket Calculator, Model 2446R, aka Slide Rule, VFD, Sealed Battery, Made In Taiwan (14176731331).jpg - Wikimedia Commons
![Vintage green VFD calculator fonts: Sharp QT-8D (1969), PC-1001 (1973), EL-811 (1972), PC-1200 (1977) : r/calculators Vintage green VFD calculator fonts: Sharp QT-8D (1969), PC-1001 (1973), EL-811 (1972), PC-1200 (1977) : r/calculators](https://preview.redd.it/vintage-green-vfd-calculator-fonts-sharp-qt-8d-1969-pc-1001-v0-vjwpy2lt0qpa1.jpg?auto=webp&s=80e41548bddd7081292a5f92acaf2fa58cc99883)
Vintage green VFD calculator fonts: Sharp QT-8D (1969), PC-1001 (1973), EL-811 (1972), PC-1200 (1977) : r/calculators
![scientific calculator * SHARP [EL-5000] sharp Showa Retro count machine VFD display fluorescence tube display : Real Yahoo auction salling scientific calculator * SHARP [EL-5000] sharp Showa Retro count machine VFD display fluorescence tube display : Real Yahoo auction salling](https://auctions.c.yimg.jp/images.auctions.yahoo.co.jp/image/dr000/auc0410/users/03adba364469d6b7503b902aa4ac948d6f20ba14/i-img1200x900-15404826856mesao1533331.jpg)