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| input-output control | |||
| internal input/output processor | |||
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| input/output control (A command that enables a program to communicate directly with a device driver. This is done, for example, by sending a string of control information recognized by the driver. None of the information passed from the program to the device driver is sent to the device itself (in other words, the control string sent to a printer driver is not displayed on the printer)) | |||