[Gllug] LyX/TeX question

[Adrian McMenamin]

I need to draw things such as finite automata, logic gates, boolean
equations etc

Can anyone recommend places to look for the appropriate extensions for
TeX - or as it is a bit simpler - LyX?

So far I have been drawing this by hand then embedding it in the LyX -
but I am an appalling freehand drawer

Thanks

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