0000950134-04-019333 8-K 2 20041213 1.01 9.01 20041215 20041215 CADENCE DESIGN SYSTEMS INC 0000813672 7372 770148231 DE 0102 8-K 34 001-10606 041204862 2655 SEELY ROAD BLDG 5 SAN JOSE CA 95134 4089431234 555 RIVER OAKS PARKWAY SAN JOSE CA 95134 ECAD INC /DE/ 19880609 8-K 1 f04027e8vk.htm FORM 8-K EX-10.1 2 f04027exv10w1.txt EXHIBIT 10.1