It is intended for our computer science undergraduate students. The applets use different colors to indicate voltage levels. The individual applets can also be run using the SUN appletviewer. The main advantage of CMOS over NMOS and bipolar technology is the much smaller power dissipation. Unlike NMOS or bipolar circuits, a CMOS circuit has almost no static power dissipation.
Power is only dissipated, in case the circuit actually switches.
This allows to integrate many more CMOS gates on an IC than in NMOS or bipolar technology, resulting in much better performance. Click on the source and gate contacts of the transistors to toggle the corresponding voltage levels and watch the resulting output value on the drain contacts. The applet uses colors to display the different voltages. The applet displays the channel of a conducting transistor as a rectangle filled with the color of its source voltage. The channel of a nonconducting transistor is shown as rectangle outline in black.