Casio Financial Calculator with 4 Line Dot Matrix Display - Walmart.com
File:Vintage Casio Model fx-7000G Scientific Calculator, LCD Dot Matrix Display, Made In Japan, World's First Graphing Calculator Available To The Public, Circa 1985 - 1988 (15810483905).jpg - Wikimedia Commons
fx-991ES PLUS | ES PLUS Series -Non Programmable- | SCHOOL & LAB. | Calculators | CASIO
Casio FX-4500P DOT MATRIX LCD Scientific Library Program Function Calculator | eBay