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 YEAR: late 1950's
 ITEM: Peripheral Device
 COMPANY: Donner Scientific
RARITY: Exceedingly Rare   Click here for further information on our rarity scale Information on the rarity of this item is unknown.

Donner 3400 Problem Board

A view of the vintage Donner 3400 Problem Board an important part of computer history

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

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Click on any of the images below to see the slideshow.
View of patchboard from the top. Left side of patchboard. Right side of patchboard. Right side connector; the top of the patchboard is facing up Item tag; located on top edge between the two connectors. Turned over; back being slid off; bottom edge toward you.