Patent ID: 8286124
Filing Date: 2012-10-09
Classification: G06F

Abstract:
1. A non-transitory storage medium in which is recorded a program for assisting design of a printed circuit board onto which is to be mounted a grid array package part, said program causing a computer to execute a method comprising: referring to positions of a plurality of terminals of said grid array package part, and a part information storage in which are stored attributes indicating whether each of said terminals is a power source terminal or a ground terminal; selecting, one at a time, power source terminals of said grid array package part as a selected terminal to be researched; searching for a first new connection path between said selected terminal and one of said ground terminals by way of a first decoupling capacitor at a first position; referring to a connection path storage storing an already-existing connection path between said terminals connected by way of a second decoupling capacitor regarding which placement has already been determined in determining whether said first new connection path is recorded in said connection path storage; storing said first new connection path in said connection path storage when said first new connection path is not recorded in said connection path storage; changing a second position of said second decoupling capacitor, when said first new connection path is already recorded in said connection path storage, to secure a placement location for said first new connection path; re-searching to find a second new connection path by way of said second decoupling capacitor, between said terminals connected by said second decoupling capacitor, which does not duplicate said first new connection path; deleting said already-existing connection path, which has been the object of said re-searching, from said connection path storage; and storing said second new connection path and said first new connection path in said connection path storage.