Patent ID: 7519936

Claim:
An unallocatable space depicting system for depicting an unallocatable space of a component mounted on the printed circuit board, the unallocatable space depicting system comprising: a detecting module configured for detecting used shapes and unused spaces of the component, the used shapes indicating a bottom shape of the component on the printed circuit board, the unused spaces consisting of first unused spaces above each of which there is at least one entity part, and second unused spaces above each of which there is no entity part; a comparison module configured for comparing a width of each one of the second unused spaces with a required width predetermined as a threshold value in designing an allocatable space for mounting other components; an incorporating module configured for incorporating the used shapes and the first unused spaces to construct the unallocatable space when none of the second unused spaces has a width less than the required width; and a computer for outputting information that the unallocatable space of the printed circuit board cannot be used to mount other components to users.