Steven Levy reminded me that in 1979, VisiCalc, the first spreadsheet program for personal computers and the app that turned the Apple II into a serious business machine. Here's a DOS copy you can run today. [Wiki, briklin]

Gizmodo '79 is a week-long celebration of gadgets and geekdom 30 years ago, as the analog age gave way to the digital, and most of our favorite toys were just being born.