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Line 30: ==Mainframe controllers== [[File:BRL64-IBM 1311 DiskDrives.jpg\|thumb\|IBM 1311 Disk Drives - Model 2 (Slave) & Model 3 (Master). The Model 3 contains the controller for multiple slaves.]] In IBM terminology a ''controller'' is "a device that decodes the [channel] command and effects the operation of the device."<ref>{{cite book\|last=IBM Corporation\|title=Introduction to IBM Data Processing Systems\|year=1978\|url=http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/generalInfo/GC20-1684-4_IBMdpIntroJul78.pdf}}</ref>{{rp\|p.5-1}}

Controller (computing): Difference between revisions