EAI 1000

YEAR: 1978
ITEM: Analog Computer
COMPANY: EAI-Electronic Associates PTY. LTD.
COUNTRY: Australia
IN OUR COLLECTION: Yes

The EAI 1000 is described on the cover of its manual as a "Micro Processor Controlled ANALOG HYBRID COMPUTER SYSTEM".

The manual was published in Oct. 1978 and we are tentatively dating the computer to that year...although a little research may push the date back to 1977 or even 1976 (some of the chips are dated 1976, week 42).

The computer in our collection was used by the Engineering School at McGill University in Montreal and, as a result, it has quite a few bells and whistles. It came with an early version of the Reference and Maintenance Manual, several extra panel cards, and quite a collection of programming cords.

We will add more information when we get additional staff to help with the research.

Related Items

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!)

Exceedingly Rare

As far as we can tell, this is one of two known existing EAI-1000 computers. The other is located in Germany in Dr. Ulmann's Analog computer museum. I'm guessing a few more will be found in the basement of a university building someday. If you have any information on other existing EAI 1000 computers, please let us know.

For more information, click on the link(s) below.

Analog Computer Museum in Germany

If you know the location of any other of these items, please let us know by contacting us at Director@TheComputerChurch.com .

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.)

We are still building. This feature will be ready by the end of February 2026.

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