> I'm not sure what exactly the problem is you're trying to 
> solve with the conversion to an applet. Running a Java app 
> can be as simple as downloading the jar file and 
> double-clicking on it, and you're done with it. 

The issue is one of presentation. I don't want to type volumes of
explanatory text into the circuit design as text labels. And I would like
each of the samples to accompany the text in the web page. "As you can see
in the applet window below, the counter is formed from three JK flip flops
and their binary output is decoded to sequential (decimal) wires to enable
each of the different operations required in the processor in the proper
order."

In addition to the text, I want to include pictures of the real chips that
are being used in the circuit, links to sources and other web sites, and to
the next lesson or sample circuit.

I could take the hours required to produce GIF animations of the circuits
operating, but that would remove any user interaction. "press the button
labeled "Clock" to see the counter advance to the next value." 

And it would be interesting to allow the user to modify or set up circuits
along the way. "What would happen if the circuit were changed to connect the
inverted clock signal to the first stage and the non-inverted clock to the
second stage? Try it and see: Just click on the wire from the clock to the
first stage and the inverter to the second stage and delete them. Then draw
new wires connecting the clock to the second stage and the inverter to the
first stage. Start the simulation and try the new circuit. Do you see the
difference?"

A student coming to the web page could instantly start learning about logic
circuits and see them operating, interact with them and change them with
guidance from the web site.

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