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NCR 18-16 Desktop Calculator
Photograph Courtesy John Kennedy
NCR-marketed version of Nippon Calculating Machine Co. (NCM)/Busicom 120DM
"Junior". NCR was an OEM customer of NCM/Busicom, and marketed a number
of Busicom-designed calculators in the USA with inside made by Busicom,
but cabinetry and other aesthetic details made by NCR. Early single-chip
MOS/LSI (Mostek MK6010), using hybrid circuit display drivers. 12-digit
vacuum-fluorescent seven-segment display. Four function, with slide-switch
selectable fixed decimal point position at 0, 2, 3, or 4 digits behind
the decimal.