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Old Calculator Web Museum Documentation Archive
Friden EC-130 Service Fliers #99(5/27/1964) through #244(6/28/1966)
This document is a collection of scans of original Friden Service Fliers. These fliers were used to communicate information relating to the Friden EC-130 calculator to field and depot service personnel. These documents are somewhat different in purpose than the Friden Service Letters. These documents seem to be more focused on procedures for service people rather than technical information relating to the calculators. The collection does not include all of the service fliers, there are notable gaps in the sequence numbers (upper right hand corner of the page). The curator assumes that only the service fliers that were relevant to the service engineer that they were sent to were kept. Others that were deemed un-important were left out. There are a few fliers that are of particular interest: Service Flier #130, Dated 11/18/1964 includes information about the proper adjustment of the display. Flier #184, dated 10/21/1965 makes it clear that copies of schematics, block diagrams, or MDD (the Computer Printout that completely defines the logic and component layout of the EC-130) shall not be released outside the company for any reason. Fliers #206(2/24/1966) and #226(4/20/1966) relate to the changeover in production from the Four-Counter to Three-Counter architecture after serial number 8500.