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Omron 1210 Desktop Calculator


Image Courtesy Takaharu Yoshida

Omron's first electronic calculator, introduced in Japan in September of 1969. The Omron 1210 is one of the earliest electronic calculators to utilize MOS LSI integrated circuitry. Four major MOS LSI chips make up the calculator with two providing the main calculator logic, and two providing the memory capability. The MOS LSI ICs are packaged in an unusual fasion, with large OMRON labeling either printed or embossed into the packaging. At this time, it is unclear who manufactured the MOS LSI chips. When the calculator was developed (1967-1969), Japanese semiconductor manufacturers did not yet have volume production MOS LSI fabrication technology perfected, so these IC's had to be made either in the US or Europe, under contract to Omron. If anyone out there has any information on the MOS LSI chips used in the Omron 1210 and Omron 1200 calculators, please contact us by clicking the EMail button at the top of this page.

The Omron 1210 is a four function calculator with twelve digit capacity using unique segmented Vacuum Flourescent display tubes that create a hand-written appearing digit rendition, similar to the Itron tubes used on some Sharp calculators from the early 1970's, but without the odd half-sized zeroes. Single add/subtract memory register. Fixed decimal setting via slide switch at left side of keyboard. Flip-up display cover becomes a shroud to allow easier reading of display in high ambient light conditions.

The Omron 1210 may be branded by other companies, as Omron was keen on selling their calculators to other distributors who would put their name on the machine, and market/sell/support the calculators through their own distribution and service networks. The Old Calculator Museum is interested in acquiring any brand variant of this calculator.