HP-25C Eumulator

[BobVA]

Received in good shape. Thank you Chris! It's a lot of fun to play with.

[Edit]
For tinkerers:
- I'm going to experiment with a red filter for the display to see if that will improve the contrast.

- I covered the back of the of the board with a layer of clear packing tape. A little work with an X-acto knife to make an opening for the battery holder, and down the edges of the IC's, got it nice and flat. It's nearly invisible and provides some insulation of those connections.