Tuesday, 12 May 2020

Calculators (4) : Rockwell 24RD-II

From 1976 is this attractive calculator. Powered by a Rockwell A5901CA CPU the 24RD-II had square root and percentage functions as well as the basic four. Numbers are shown on an eight and a half digit vacuum fluorescent display. The calculator supported negative numbers and has the extra half digit to display the sign.