EAI 1110 Variplotter Time Base Module
YEAR: 1968
ITEM: Manual/User's Guide
COMPANY: Electronic Associates, Inc.
COUNTRY: USA
IN OUR COLLECTION: Yes
This was one of EAI's "Maintenance Series" manuals for the 12.848 Time Base Module of the EAI variplotter. It was published in November 1968 and gave detailed instructions and diagrams on how to maintain the time base module. It included "revision notice" in the front warning of a bug in the plotter.
This module was to be used only with the Model 99.730 Variplotter and the EAI 580 computer. The manual included a replacement part list and fold-out drawings of the schematics and wiring.
It's not a good sign when someone has written two phones numbers for EAI in the upper corner of the cover page of the manual. It looks like the manual wasn't as clear as one would hope and the user needed some further explanation.
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Documents
Documents for this item have not yet been scanned or not yet posted. There are a lot of pages...contact us if you have an immediate need. (Although there are not a lot of "immediate needs" for a 70+ year old computer!)
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OUR DEFINITIONS OF RARITY
One of a Kind: Only known existing item.
Exceedingly Rare: Only 2 to 10 known to exist.
Very Rare: Only 11 to 25 are known to exist.
Rare: Only 26 to 50 are known to exist.
Difficult: Difficult to find.
Available:Can be commonly be purchased.
Unknown: We cannot make a determination.
(For comparison: Many people consider the Apple-1 computer to be rare. As of 2025 there are 92 confirmed and probable Apple-1 computers.)
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