The Computer Automation LSI-2 mini-computer. Some spare parts are laying around on this system. The 8" floppy disks are below the actual control computer. All the I/O was remote on this system. Only two twisted pair wires connected from the back of the computer to each remote unit. About 8 remote units with 24 inputs and 24 outputs could control a typical sorter. These systems were a lot easier to install and didn't require running 120VAC control wires hundreds of feet back to the computer.