On November 15th 1971, Intel introduced the 4004–the world’s first single-chip microprocessor. The 4-bit chip was a breakthrough, but it didn’t change the world instantly. In fact, some of the first products with Intel Inside–including a pinball machine, an electronic voting machine, and Wang’s first word processor–didn’t make much of an impact at all. Benj Edwards is celebrating the anniversary with an illustrated look back at this landmark component and some of the 1970s innovations it made possible.