Acronym for Device Control Block. The DCB is used by the I/O subsystem to communicate between the device handier and SIO.
Data Concentrator Board. A 6809 site controller board that provides a link between the central site controller and the Asynchronous Communications Board (ACB) in Simulcast subsystems.
Data Control Block. Data structures used for passing information between user application programs and FTAM applications entities. The DCBs vary, depending on the function call.
Device Control Block, used by Serial Input/Output.