The Computer History Museum, in Mountain View California, is opening a 25,000-square-foot exhibit, titled "Revolutions," on Thursday. Steve Wozniak, co-founder of Apple, gave us and a few other journalists a tour of the new exhibit while it was still being built. Harry McCracken wrote up the tour and detailed more about each of the computers Woz explained at
http://technologizer.com/2010/12/02/a-guided-tour-of-computing-history/ In the tour we went from Herman Hollerith's punch-card tabulating machine through the Macintosh era.