MONROE 820A Vintage CRT CALCULATOR circa 1969 DTL IC - No cable - UNTESTED For Sale
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MONROE 820A Vintage CRT CALCULATOR circa 1969 DTL IC - No cable - UNTESTED:
MONROE 820A Vintage CRT CALCULATOR 1969-1970 DTL IC - No Cable - Function 820A Cathode-ray Tube CalculatorManufacturer: Monroe, a division of Litton Business Systems, Inc.Model Number: 820ASerial Number: D 460659US Patents: 2,769,592 & 3,328,763Place Manufactured: Orange, New Jersey, U. S. A.Dimensions: 5 3/4 x 10 3/4 x 17 1/2 in.Category: an article that was released aroundthe time this calculator was introduced:The Monroe division of Litton Industries, Inc., has begun production of what it describes as the smallest cathode ray tube desk calculator in the world. Donald A. McMahon, president, said the new unit, which weighs 14 pounds and measures 11 inches wide by 17 inches deep, is made entirely in this country with no parts from foreign countries.Known as the Monroe 820, the desk-top unit can handle up to 14 digits with two, three or four decimal point settings or automatic floating decimals for various numbers. When computation exceeds the 14-digit limit, the green read-out flashes on and off and a buzzer sounds to warn the operator. It is priced at S895.Mr. McMahon said his company's initial production schedule calls for 35,000 units a year. He predicted the domestic market for similar equipment would be about 200,000 units a year, while the total world market for all types of calculators now at $600-million is expected to reach SI-billion by 1974 when 75 per cent of all sales will be for electronic models.You can also find a fantasticallydetailed description of this calculator by searching the oldcalculatormuseum page for "Monroe 820a".There is also a youtube video onFederico Morini's channel that gives an idea of what the calculator looks like in action.Please know that I really have no idea if this is functional. I do not have the power cable! It may need some work, it may not function at all.Please also know that this calculator will be carefully shipped and delivered in the condition as shown in the photos!!Please feel free to ask any questions. I am not an electrician, but I am happy to do what I can to answer any questions.Thanks for your interest.
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