![This calculator is so old that they were still experimenting with how the digits should be displayed.. And yes, that is actually how the zero looks. : r/interestingasfuck This calculator is so old that they were still experimenting with how the digits should be displayed.. And yes, that is actually how the zero looks. : r/interestingasfuck](http://i.imgur.com/yM8RmhV.jpg)
This calculator is so old that they were still experimenting with how the digits should be displayed.. And yes, that is actually how the zero looks. : r/interestingasfuck
![RARE Casio FX-39 Scientific Calculator Green VFD Display 1970s Vintage Tested! | Scientific calculator, Calculator, Old technology RARE Casio FX-39 Scientific Calculator Green VFD Display 1970s Vintage Tested! | Scientific calculator, Calculator, Old technology](https://i.pinimg.com/originals/31/0a/48/310a48b3978629523ff0c417a538dc7c.jpg)
RARE Casio FX-39 Scientific Calculator Green VFD Display 1970s Vintage Tested! | Scientific calculator, Calculator, Old technology
![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
![File:Vintage Casio Personal M-1 Electronic Pocket Calculator, aka H-813B, Made In Japan, VFD, Circa 1978 - 1981 (15805562590).jpg - Wikimedia Commons File:Vintage Casio Personal M-1 Electronic Pocket Calculator, aka H-813B, Made In Japan, VFD, Circa 1978 - 1981 (15805562590).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/e/ec/Vintage_Casio_Personal_M-1_Electronic_Pocket_Calculator%2C_aka_H-813B%2C_Made_In_Japan%2C_VFD%2C_Circa_1978_-_1981_%2815805562590%29.jpg)
File:Vintage Casio Personal M-1 Electronic Pocket Calculator, aka H-813B, Made In Japan, VFD, Circa 1978 - 1981 (15805562590).jpg - Wikimedia Commons
![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)