Research in the Digital Design Environments Laboratory (DDEL) centers around the construction of computer-aided design tools and design environments for analog, digital and mixed-signal systems design. DDEL research has been funded in part by the Advanced Research Projects Agency (ARPA/CSTO and ARPA/ESTO), Wright Labs of the US Air Force, the Semiconductor Research Corporation (SRC), Rome Lab of the US Air Force, and the General Electric Company.