Rockwell Model 18R Calculator
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The Rockwell 18R is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 20 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is PP3 9V.
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This exhibit has a reference ID of CH65626. Please quote this reference ID in any communication with the Centre for Computing History.