Editing MOSFET (section)

==== Digital ====
The growth of digital technologies like the [[microprocessor]] has provided the motivation to advance MOSFET technology faster than any other type of silicon-based transistor.<ref>{{cite web|url=http://www.computerhistory.org/microprocessors/ |title=Computer History Museum&nbsp;– Exhibits&nbsp;– Microprocessors |publisher=Computerhistory.org |accessdate=2012-06-02}}</ref> A big advantage of MOSFETs for digital switching is that the oxide layer between the gate and the channel prevents DC current from flowing through the gate, further reducing power consumption and giving a very large input impedance. The insulating oxide between the gate and channel effectively isolates a MOSFET in one logic stage from earlier and later stages, which allows a single MOSFET output to drive a considerable number of MOSFET inputs. Bipolar transistor-based logic (such as [[transistor-transistor logic|TTL]]) does not have such a high fanout capacity. This isolation also makes it easier for the designers to ignore to some extent loading effects between logic stages independently. That extent is defined by the operating frequency: as frequencies increase, the input impedance of the MOSFETs decreases.