There's an exhibit at the museum in Felton (old church, corner of Gushee and Felton-Empire rd). It's about adding machines, slide rules.
There's a large "difference engine", an analog computer, built out of the british version of erector sets. The sign says there's a live demo this sat and sun between 2-3pm.
This weekend is the last, then the exhibit changes to something else.
Interesting, if you happen by Felton this weekend.
And no, unfortunately, it does not run linux,
Bruce