Patent ID: 6416333
Filing Date: 2002-07-09
Classification: G06F,H01R,H05K

Abstract:
A combination of:a motherboard having a length and a width and opposing flat upper and lower parallel surfaces, the motherboard including a central control part and a single motherboard connector including a plurality of connector elements secured to the upper surface of said single motherboard; a plurality of essentially identical extension boards; having a length and a width, each said extension board including flat upper surfaces and opposing flat lower surfaces and electronic devices mounted thereon, each said extension board further comprising an upper electrical connector on the upper surface and a lower electrical connector on the lower surface, the upper and lower electrical connectors being vertically aligned and having a plurality of upper connector elements on the upper surface and a corresponding plurality of lower connector elements on the lower surface substantially vertically aligned and electrically connected through the extension board, at least one pair of adjacent first and second upper connector elements vertically aligned with adjacent first and second lower connector elements on each said board having crossing connections such that the first lower connector element vertically aligned with the first upper connector element is electrically connected to the second upper connector element and the second lower connector element aligned with the second upper connector element is electrically connected to the first upper connector element, wherein a plurality of said extension boards are connected to the single motherboard and the crossing connections on the extension boards enable mounting of a plurality of said extension boards to said motherboard while enabling selection of a selected one of said extension boards by the central control part on the motherboard.