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freeware
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Magic VLSI Layout Tool
Magic is a venerable VLSI layout tool, written in the 1980's at Berkeley by John Ousterhout, now famous primarily for writing the scripting interpreter language Tcl. Due largely in part to its liberal Berkeley open-source license, magic has remained popular with universities and small companies.
The open-source license has allowed VLSI engineers with a bent toward programming to implement clever ideas and help magic stay abreast of...
preview:
http://opencircuitdesign.com
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freeware
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QUCS - Quite Universal Circuit Simulator
Quite Universal Circuit Simulator (Qucs) is a open source electronics circuit simulator software released under GPL. It gives you the possibility to set up a circuit with a graphical user interface and simulate the large-signal, small-signal and noise behaviour of the circuit.
Pure digital simulations are also supported using VHDL and/or Verilog-HDL.
preview:
http://qucs.sourceforge.net
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demo
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Spice CREATOR Demo
Spice Creator, CAE System provides the most complete and high performance solution for electronics circuit design and simulation tool using personal computers.
Includes full Schematic Design and Capture, Circuit Simulator, full interactive Symbol Editor and XSPICE and PSPICE library models.
400+ Page Student work book and Instructor’s manual.
preview:
http://www.advancedmsinc.com
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demo
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TINA - Analog, Digital, Symbolic, RF and Mixed-Mode Circuit Simulation
Powerful yet affordable software package for designing, simulating, and analyzing analog, digital and mixed electronic circuits.
Analysis results can be displayed as sophisticated diagrams or on a range of virtual instruments.
Comprehensive DTP tools can be used to produce professional reports and presentations.
Electrical engineers will find TINA an easy to use, and high performance tool . . .
preview:
http://www.tina.com
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freeware
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XCircuit
XCircuit is a UNIX/X11 (and now Windows, if you have an X-Server running) program for drawing publishable-quality electrical circuit schematic diagrams and related figures, and produce circuit netlists through schematic capture.
XCircuit regards circuits as inherently hierarchical, and writes both hierarchical PostScript output and hierarchical SPICE netlists.
Circuit components are saved in and retrieved from libraries which are fully...
preview:
http://opencircuitdesign.com
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