[peter303]

60 Minutes toured a missile silo a few years ago show control computers from the 50s and 60s. It looked just like computers in TV shows from that era. There appeared to be a few jury-rigged gizmos demonstrating how hard it is to repair such.

Ive heard stories of some older Russian aircraft still containing vaccum tubes. And I imagine the oldest US craft, even the old space shuttles, not that far ahead.