The 1620 had very few logic circuits; it looked up sums in a table instead. It’s nickname was “CADET”: “can’t add; doesn’t even try!” There is a 1620 preserved at the American Computer Museum in Bozeman, Montana. A few years ago, Ted Hoff was given an award by the museum. As he walked by the 1620, he remarked that had used one, and that the machine’s creative use of memory in place of logic convinced him that it would be possible to create a processor on a sliver of silicon—what became the Intel 4004.