1895 – Otto Steiger received a patent for the Millionaire calculating machine. Switzerland’s Hans Egli made 4,700 of the 120-pound things. The Millionaire’s chief feature was the ability to do direct multiplication with a single rotation of the handle!
1952 – British radar engineer Geoffrey Dummer introduced the concept of the integrated circuit at the Symposium on Progress in Quality Electronic Components in Washington, DC.
Read Tom’s science fiction and other fiction books at Merritt’s Books site.