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The DY-4 Orion V Computer, model (?), serial number ORV8023008.The computer was designed around the the STD-bus architecture and featured two built-in 8" diskette drives. It required an external display and a keyboard (such as the DY-4 VGT-100 or…

DY-4 Systems Inc. Challenger I microcomputer model number 953 Chassis, serial number S9538303008.