What is a Device Driver | How Does Device Driver Works Explained | Computer Drivers
Автор: SimplyInfo
Загружено: 2018-04-20
Просмотров: 194182
What is a Device Driver, How Does Device Driver Works Explained, Computer Drivers, Computer Technology.
In computing, a device driver is a computer program that operates or controls a particular type of device that is attached to a
computer.A driver provides a software interface to hardware devices, enabling operating systems and other computer programs to access hardware functions without needing to know precise details of the hardware being used.A driver communicates with the device through the computer bus or communications subsystem to which the hardware connects. When a calling program invokes routine in the driver the driver issues commands to the device.
Once the device sends data back to the driver, the driver may invoke routines in the original calling program. Drivers are hardware dependent and operating-system-specific. They usually provide the interrupt handling required for any necessary
asynchronous time-dependent hardware interface.For example, a high-level application for interacting with a serial port may simply have two functions for "send data" and "receive data". At a lower level device driver implementing these functions would
communicate to the particular serial port controller installed on a user's computer.In modern hardware and operating systems, drivers operate in many different environments.
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