The second of two design courses that must be taken in the same academic year, in which student teams develop an electronic system or device from concept to working prototype. Emphasis is placed on continued execution of the project plan developed in ECE 490. Formal interim and final reports are required; groups demonstrate and present their designs. Prerequisite: ECE 490 or E E 400 in the preceding Fall term. Co-requisite: ECE 303. Credit may be obtained in only one of ECE 491 or E E 401.