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Excellence in digital circuit design and simulation software

Welcome

We are pleased to make available quality tools for designing and simulating digital logic circuits. EXL-Sim, our flagship product, is a graphical circuit design and simulation tool with full macro capability. Besides it, we offer several other free tools that can aid in logic circuit simplification, fault coverage, etc.

These tools are being offered as adjuncts to Dr. Richard Tinder’s excellent textbook, Engineering Digital Design, published by Academic Press, and his more recent e-book, Asynchronous Sequential Machine Design and Analysis, available online from Morgan/Claypool Publishers.

Please note that our website is not yet complete. Note also that EXL-Sim — which many of Dr. Tinder’s students have used and suffered with in beta form (for which we sincerely thank each of you!) — is not quite ready for its first post-beta release, but will be soon. We ask for your patience and understanding. Please check this site for updated release information. Thank you!

The free software tools are available and can be downloaded now.