Over 60 years since the first digital computers switched on, the chances of seeing one of these pioneers in action have grown incredibly slim as time (and recycling) takes its toll. Take a visit to Britain's National Museum of Computing in Bletchley Park as of today, however, and you'll see one working. A finished 3-year restoration effort lets the Harwell Dekatron -- at one point renamed the Wolverhampton Instrument for Teaching Computation from Harwell, or WITCH --
