On Tuesday 11 October 2005 08:22, Artur G. Sibagatullin wrote: >Hi >is there any tools for drawing electrical circuits containing >transistors digital blocks such as triggers, decoders and so on. >I know about dia but it uses ugly symbols for transistors. May be one >have symbols of CMOS transistors for dia? >Thanks Yes, there is a very extensive suite of highly professional opensource programs to do this. Do a google search for gEDA. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) 99.35% setiathome rank, not too shabby for a WV hillbilly Yahoo.com and AOL/TW attorneys please note, additions to the above message by Gene Heskett are: Copyright 2005 by Maurice Eugene Heskett, all rights reserved.