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The CTTY Command

DOS can take information or data from and send it to different kinds of devices. Any device that you can use to give information to DOS is called an input device, and any device DOS can send information to is an output device. DOS uses your keyboard and screen as the standard input and output devices. Together, these two devices make up the console, known to DOS as the CON device. The internal command CTTY enables you to tell DOS that you want to use a different device for input and later enables you to restore the keyboard and screen as the console.

Use one of these syntax lines for the internal command CTTY:


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