![Nerd Watch Museum: Calculator Watches, Part One | Vintage Electronics Have Soul – The Pocket Calculator Show Website Nerd Watch Museum: Calculator Watches, Part One | Vintage Electronics Have Soul – The Pocket Calculator Show Website](http://www.pocketcalculatorshow.com/wp-content/uploads/2012/06/casio-ca-951.jpg)
Nerd Watch Museum: Calculator Watches, Part One | Vintage Electronics Have Soul – The Pocket Calculator Show Website
![Saturday watch here, Casio made some great lines of timepieces, but the calculator watches are probably the most recognized, this one is the Casio CFX-400! Capable of normal timekeeping, it was a Saturday watch here, Casio made some great lines of timepieces, but the calculator watches are probably the most recognized, this one is the Casio CFX-400! Capable of normal timekeeping, it was a](https://preview.redd.it/zka4g282upb61.jpg?auto=webp&s=06d4890f932d490a0e4b3b0cf380ab8338baf65d)
Saturday watch here, Casio made some great lines of timepieces, but the calculator watches are probably the most recognized, this one is the Casio CFX-400! Capable of normal timekeeping, it was a
![Amazon.com: Casio General Men's Watches Data Bank CA-506-1UW - WW : Casio: Clothing, Shoes & Jewelry Amazon.com: Casio General Men's Watches Data Bank CA-506-1UW - WW : Casio: Clothing, Shoes & Jewelry](https://m.media-amazon.com/images/I/815LFf0FvvL._AC_UY1000_.jpg)
Amazon.com: Casio General Men's Watches Data Bank CA-506-1UW - WW : Casio: Clothing, Shoes & Jewelry
![1: From left to right: the abacus ring, a Casio calculator watch and... | Download Scientific Diagram 1: From left to right: the abacus ring, a Casio calculator watch and... | Download Scientific Diagram](https://www.researchgate.net/publication/307467240/figure/fig1/AS:571426333618176@1513250062080/From-left-to-right-the-abacus-ring-a-Casio-calculator-watch-and-the-Apple-Watch.png)