The conductive state of the FET's channel is what allows or prevents current from flowing in the device. For a typical logic N-channe...
The FET as a Logic Switch
Most of the logic devices used in highly integrated circuits do not use bipolar transistors. Instead, they use field effect transistors....
Transistor Switch OFF
When the input is connected to logic zero (ground voltage), no current flows into the base of the transistor, since its base and emitter t...
Transistor Switch ON
Transistors can be configured to function as switches. As can be seen in figure bellow, an NPN transistor operating as a current controlled ...
Digital Hardware Concepts
In addition to the CPU, memory, and I/O building blocks, other logic circuits may also be required. Such logic circuits are frequently re...
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