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freeware
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Electric - free CAD software
Electric is a sophisticated electrical CAD system that can handle many forms of circuit design, including: * Custom IC layout (ASICs) * Schematic drawing * Hardware description language specifications * Electro-mechanical hybrid layout
preview:
http://www.gnu.org
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freeware
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Free Model Foundry
The Free Model Foundry (FMF) is dedicated to the furtherance of standard modeling practices within the electrical engineering community.
In particular we support the use of VHDL, Verilog, and IBIS modeling languages.
Our current focus is on providing functional simulation models (with timing) of off-the-shelf digital components in VHDL and Verilog.
preview:
http://www.freemodelfoundry.com
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freeware
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GEDA - GNU Electronic Design Automation Page
The gEDA project is working on producing a full GPL'd suite of Electronic Design Automation tools.
These tools are used for electrical circuit design, simulation, prototyping, and production.
The gEDA project was started because of the lack of free EDA tools for UNIX.
The tools are being developed mainly on GNU/Linux machines, but considerable effort is being made to make sure that gEDA runs on other UNIX variants.
preview:
http://www.geda.seul.org
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