A Brief History of the MOS transistor, Part 3: Frank Wanlass – MOS Evangelist, Inventor of CMOS
It’s hardly surprising that semiconductor companies were reluctant to invest much energy into MOSFET development in the early 1960s. Early MOSFETs were 100 times slower than bipolar transistors, and they were considered unstable, for good reason: their electrical characteristics drifted badly and unpredictably with time and temperature. A lot of research and development work would…
Source: eejournal.com