Casio Battery & Solar Powered Financial Calculator
Where is the square root button on this Casio FC 100V? The button which looks like a square root button (currently on the screen) doesn't give the square root so I have
Casio FC-200 Financial Calculator: a Japanese classic from around 1988
Casio FC 200V FC200V 100V Financial Calculator - 14 Digits, Dual Power, New 79767167004 | eBay