Four bit adder: Difference between revisions

</pre>

One feature of the Tcl code is that if you change the definitions of <code>and</code>, <code>or</code>, <code>not</code> and <code>GND</code> (as well as of <code>gate</code> and <code>pins</code>, of course) you could have this Tcl code generate hardware for the adder. The bulk of the code would be identical.