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Brother ProCal 514 Desktop Calculator
Image Courtesy Charles C. Littell, III
14-digit Nixie display calculator. Four function with accumulating memory
register. Fixed decimal point set by thumbwheel switch. User-selectable
rounding mode. Sum of Products/Quotients accumulating mode. Small-scale
integrated circuit logic. Second generation of Brother desktop
calculators. See the exhibit on the
Brother Calther 412 for an example of Brother's first-generation
electronic calculator.