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Old Calculator Web Museum Documentation Archive

Friden EC-130 Service Manual
September, 1965

This is the official Service Manual for the Friden EC-130 Electronic Calculator. It goes into great level of detail of how the logic of the machine operates, down to the gate and flip-flop level. The document is intended to be used in conjunction with the EC-130 Computer Printout, which provides information about the location of the various gates and flip flops, down to the component level, on the circuit boards. This manual outlines the four counter (early version, up to Serial #8500) EC-130 calculator. As yet, I have not come across a similar manual for the more common three-counter version of the EC-130.

Any re-distribution, printing, or online presentation of this document must include the watermark indicating its source as the Old Calculator Museum. Thank you.


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Friden EC-130 Service Manual
September, 1965

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