1. Monroe The Calculator Company: 1924,1956,1964,1970

    For back to school, consider the 1970 model:

    • The smallest CRT-display desktop calculator in the world. 
    • 11 inches wide by 17 inches deep
    • Weighs only 14 pounds
    • When computation exceeds the 14-digit limit, the green read-out flashes on and off and a buzzer warns the operator. 
    • Priced at $895 

    source: theoldcalculatormuseum (also this page)

     
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      I remember the day.
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