Originally Posted By: tman
Looks like you mean the Cardiac (CARDboard Illustrative Aid to Computation). Pics which show the bugs. Build your own.


Wow! Good links, thanks.

That's definitely the right idea, but I don't think CARDIAC was the specific product we used. It does mention "bug", though, but otherwise the appearance isn't what (little) I recall from 1978.

Cheers!