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A computer bus structure includes a plurality of separate bus segments on a mother board. Plugging in of each of a plurality of interface boards automatically connects the right-hand portion of a particular bus segment to the left-hand portion of an adjacent bus segment so that a local bus of the ne

A computer bus structure includes a plurality of separate bus segments on a mother board. Plugging in of each of a plurality of interface boards automatically connects the right-hand portion of a particular bus segment to the left-hand portion of an adjacent bus segment so that a local bus of the needed length is created from the separate bus segments by the plugging of a processor board and a plurality of interface boards into successive adjacent connector slots, respectively, of the mother board. Insertion of processor boards into a particular connection slot of the mother board prevents the two bus segments adjacent thereto from being connected.

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A reconfigurable bus structure in a system including a first processor and a first group of interface circuits for connection to said first processor, said first processor and each of said interface circuits each being in electrical communication with a plurality of edge connector conductors, said r

A reconfigurable bus structure in a system including a first processor and a first group of interface circuits for connection to said first processor, said first processor and each of said interface circuits each being in electrical communication with a plurality of edge connector conductors, said reconfigurable bus structure comprising in combination: a mother board having a plurality of edge connecting means for connection to the edge connector conductors of various ones of said interface circuits and said first processor; a plurality of local bus segments disposed on said mother board, each of said local bus segments including a first number of conductors each having separate first and second electrical contact areas which are disposed on opposite sides of adjacent ones of said edge connecting means; a first processor board on which said first processor is disposed, said first processor board having a second number of edge connector conductors, each of which has a first electrical contact area, for electrically contacting said first electrical contact areas of a corresponding one of said local bus segments, said second number being equal to said first number; and a first group of interface boards on which said interface circuits of said first group are disposed, respectively, each of said interface boards having thereon a third number of edge connector conductors, each of which has a first electrical contact area for electrically contacting corresponding ones of said first electrical contact area of conductors of one of said local bus segments on a first side of one of said edge connecting means into which that interface board is plugged, each of said third number of edge connector conductors also having a second electrical contact area for electrically contacting corresponding ones of said second electrical contact areas of conductors of another one of said local bus segments on a second side of that edge connecting means, said third number being equal to said first number, wherein when said first processor board is plugged into a first edge connecting means of said mother board, the first electrical contact areas of each of the edge connector conductors of said first processor board electrically contacts corresponding ones of the first electrical contact areas of conductors of one of said local bus segments on a first side of a first one of said edge connecting means, wherein when each of said interface boards of said first group is plugged into a respective, successive one of the rest of said edge connecting means, the first electrical contact areas of the edge connector conductors of that interface board respectively electrically contact corresponding ones of the first electrical contact areas of conductors at another one of said local bus segments on a first side of of that edge connecting means, and the second electrical contact areas of the edge connector conductors of that interface board respectively electrically contact corresponding ones of the second electrical contact areas of conductors of another one of said local bus segments on a second side of that edge connecting means, whereby physical insertion of said first processor board and said interface boards of said first group into successive edge connecting means of said mother board automatically creates a local bus of the needed length operatively connecting said first processor to said interface circuits of said first group.