What is I/O commands
Answers
Explanation:
The I/O commands allow you to own, use, read from, write to, and close devices. To direct I/O operations to a device, first issue the following commands:
Issue an OPEN command to establish ownership, unless the device is your principal device.
Issue a USE command to make the device the current device.
Subsequent READ and WRITE commands read from and write to that device.
A CLOSE command releases ownership of the device so that other processes can use the device.
Answer:
In computing, a command is a directive to a computer program to perform a specific task. It may be issued via a command-line interface, such as a shell, or as input to a network service as part of a network protocol, or as an event in a graphical user interface triggered by the user selecting an option in a menu