Patent ID: 7120885

Claim:
A component placement evaluation aiding computer program embodied on a computer readable medium for displaying a placement of components that are on a wiring board and aiding an evaluation by a user of whether a placement of a position dependent component whose effectiveness differs according to a placement position is appropriate, the program realizing on a computer: a position information storage step for storing a set of position information which is made up of information showing a position on a wiring board of (a) a position dependent component, or a pin thereof, and (b) one or more effected components, or pins thereof, which are potentially effected by the position dependent component, wherein the position information storage step includes determining and storing effective components based on an effective frequency spectrum according to pin spacing: a retrieval step for retrieving from the position dependent component or the pin thereof, based on the sets of position information stored in the position information storage step, for each effected component or the pins thereof, whether the effected component or the pin thereof is within a predetermined distance from the placement dependent component or the pin thereof, or for retrieving a predetermined number of effected components or pins thereof in a predetermined order; and a relationship information storage step for storing the effected component or the pin of the effected component retrieved in the retrieval step in relation with the position dependent component or the pin thereof from which the retrieval was performed, as relationship information.