Early development of mixed-signal MOS circuit technology

In 1965, Gordon Moore observed that ?single-chip integrated circuits were doubling in complexity approximately every two years, mostly by reducing all dimensions of devices. He correctly foresaw the continuation of that trend for many years ahead. Following announcements of the first 1,024 bit memory chip (Intel 1103, in 1970) and the first microprocessor (Intel 4004, in 1971) it became clear that MOS technology would enable mass production of very low cost digital electronics. Over the next 3 decades, MOS technology matched and then surpassed bipolar technology for all but a few specialized applications.