The design of a hybrid computer system

Three typical hybrid computers in industry and educational institutions are presented. The hybrid computer designed and built at the University of Missouri at Rolla consists of an SCC-650 digital computer, a TR-48 analog computer, and a hybrid interface. The interface permits the digital computer to control the modes of operation on the analog computer. There are also 9 multiple-pole relays on the interface that can be controlled by the digital computer. A 320 hold removable patchboard is included in the interface. There are 40 trunks lines from the analog computer that are present on the patchboard. The 4 digital-to-analog channels and the 8 analog-to-digital channels are present on the patchboard. The relay contacts are available for patching on the patchboard. Also present on the patchboard are a 12-bit input status register, the 12 output bits of the accumulator, hybrid interface commands, and an assortment of patchable logic. The outputs of the flip-flops in the interface logic are displayed on a display panel. A set of switches for manual control of the analog computer modes is available on the interface. The patchboard allows a large amount of flexibility for solving problems on the hybrid computer --Abstract, page ii