Control Data (?) circuit boards

Al Kossow aek at
Thu Sep 10 12:18:50 CDT 2015

On 9/10/15 9:23 AM, Mike Stein wrote:
> Not very interesting

backside is all-telling.
DD12092 is the part number. DD == "Data Display"
the display division of CDC

they are the form factor that DD used. I picked up a 3291-B display
controller manual from Billy Pettit yesteray, and is uses discrete
cards in the same shape.

cans are Fairchild, circa 72/73

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