[
www.youtube.com]
"Philadelphia's 30th Street Station is home to one of the few remaining "split-flap display" departure boards. The flipping, clicking board, which is managed on four desktop computers running Windows 95, will soon be replaced by a digital display. Other stations' split-flap display boards have been replaced by digital displays that try and mimic the look and sounds of the original. Aficionados and nostalgics, take note: the Railroad Museum of Pennsylvania in Strasburg may be acquiring 30th Street's board. Interested in seeing a split-flap board in action before they're all gone? Wikipedia has a list of remaining boards around the world." [
www.metafilter.com]
Note that the Metafilter article contains many links that I haven't carried over here.
Google search: [solari OR "split-flap" board] [
www.google.com]