WRL Technical Report 88/1 Fast Printed Circuit Board Routing Jeremy Dion February 1988 This report describes the problem of printed circuit board routing. An overview of circuit board construction is given. The algorithms in a printed circuit board router used for fully automatic routing of high-density circuit boards are described. Running times of a few minutes have resulted from a new data structure for efficient representation of the routing grid, quick searches for optimal solutions, and generalizations of Lee's algorithm for maze routing.