Darrell A. Teegarden has over fifteen years of experience in development of HDL-based models and software tools. His work includes contributions using the MAST(r) modeling language as well as development of VHDL-AMS models and simulation tools. He was principal investigator for a DARPA funded VHDL-AMS project (composite CAD program, focused at MEMS design and analysis). He currently manages VHDL-AMS related tool development for board and system analysis at Mentor Graphics Corporation in Wilsonville, Oregon. Darrell is an IEEE member and holds a B.S., Chemical Engineering from Oregon State University and an M.S., Electrical Engineering from Stanford University.