Designed specifically for complex, high-density pc boards requiring optimum placement and routing, the CE-Creator, based on the firm's proven placement and routing algorithms, provides users with significant productivity gains by providing addition control and verification. CE-Creator and CE-Creator-HS use Cadence Design Systems' SPECTRA interface, for placement and routing products. The software utilizes a suite of automatic and semi-automatic gridless placement tools to increase pc board designer's productivity. The placement task is divided into three areas: whole-of-board, constraint-based simultaneous placement; sequential placement; and a set of optimization processes that can be used with either or both of the placement techniques. Both are available to run on Windows NT 4, HP UN10 and Sun Solaris 2.6.