![File:Vintage Omron 86R Electronic Pocket Calculator, VFD, Made In Singapore, Introduction Date - 1975 (16218662760).jpg - Wikimedia Commons File:Vintage Omron 86R Electronic Pocket Calculator, VFD, Made In Singapore, Introduction Date - 1975 (16218662760).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/0/08/Vintage_Omron_86R_Electronic_Pocket_Calculator%2C_VFD%2C_Made_In_Singapore%2C_Introduction_Date_-_1975_%2816218662760%29.jpg/1937px-Vintage_Omron_86R_Electronic_Pocket_Calculator%2C_VFD%2C_Made_In_Singapore%2C_Introduction_Date_-_1975_%2816218662760%29.jpg)
File:Vintage Omron 86R Electronic Pocket Calculator, VFD, Made In Singapore, Introduction Date - 1975 (16218662760).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 Sears Electronic Pocket Scientific Calculator, Model 801.58771, VFD, Assembled In Mexico, Circa 1974 (14192992065).jpg - Wikimedia Commons File:Vintage Sears Electronic Pocket Scientific Calculator, Model 801.58771, VFD, Assembled In Mexico, Circa 1974 (14192992065).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/2/2a/Vintage_Sears_Electronic_Pocket_Scientific_Calculator%2C_Model_801.58771%2C_VFD%2C_Assembled_In_Mexico%2C_Circa_1974_%2814192992065%29.jpg)
File:Vintage Sears Electronic Pocket Scientific Calculator, Model 801.58771, VFD, Assembled In Mexico, Circa 1974 (14192992065).jpg - Wikimedia Commons
![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](https://preview.redd.it/nrd3gimaw36y.jpg?auto=webp&s=0ac0f93bb9eab3a481257b2123353c2ac5f42f69)