Ancient transistor ?computer board (Peter Van Peborgh)

[Jon Elson]

On 06/20/2020 04:20 AM, Peter Van Peborgh via cctech wrote:
> Guys,
>
> I now know it is an early CDC board. IT had C*NT*OLDATA on the reverse - how
> I missed that must be attributed to old age. (Thanks Doug)
>
> Here are shots of the back: https://photos.app.goo.gl/UPozyBB3zp7XYcP79
>
>
Ah, the missing letters are covered by solder!

> Any idea what the row of hole opposite the contacts were? Testing points?

Yes, for sure.  The way they are made so close to the edge, you can just clip a scope probe to them for testing.

Jon