Donner 3400 Problem Board
YEAR: late
ITEM: Peripheral Device
COMPANY: Donner Scientific
COUNTRY: U.S.A.
IN OUR COLLECTION: Yes
The Donner "Problem Board" was used with the Donner 3400 analog computer to provide additional programming capability and/or to demonstrate analog computer programming in a classroom. This board plugs neatly into the Donner 3400 analog computer.
The 3430 Problem Board measures 21" in width, 14" in height and 2" in depth. It has two 32 pin connectors at the top which connect to the computer and two grounds at the bottom of the board.
Related Items
Related Item 1: Donner Analog Computer Model 3500
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
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.)
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