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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 large-scale integrated circuitry. Five large-scale devices make up the calculator -- four large devices, and one smaller device. Of the four large devices, it appears that two provide the main calculator logic, and two provide the memory register capability. The Large Scale Integration (LSI) devices 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 LSI devices. When the calculator was developed (1967-1969), Omron, nor any other Japanese semiconductor manufacturer, did not have volume production large-scale integrated circuit fabrication technology perfected, so these devices had to be produced either in the US or Europe, under contract to Omron. If anyone out there has any information on these devices 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 machines and market/sell/support them through their own distribution and service networks. The Old Calculator Museum is interested in acquiring any brand variant of the Omron 1210.