1. A three dimensional multilayer circuit ( 600 ) comprising: a plurality of crossbar arrays ( 512 ), each crossbar array ( 512 ) comprising intersecting crossbar segments ( 410 , 420 ); programmable crosspoint devices ( 514 ) interposed between the intersecting crossbar segments ( 410 , 420 ); and shift pins ( 505 , 510 ) configured to shift connection domains ( 430 ) of the intersecting crossbar segments ( 410 , 420 ) between crossbar arrays ( 512 ) such that the programmable crosspoint devices ( 514 ) are uniquely addressed; the shift pins ( 505 , 510 ) being configured make electrical connections between crossbar arrays ( 512 ) by passing vertically between crossbar segments ( 410 , 510 ) in the first crossbar array ( 512 ) and crossbar segments in a second crossbar array.