What is TWAIN?
1. A specification for allowing a computer to support two or more active input devices.
2. A specification that allows a computer to support two display devices.
3. A specification for allowing bidirectional communication between a computer and a printer.
4. >>A specification for an interface supported by scanners to allow them to be controlled by third-party applications, such as Adobe Photoshop.
Explanation : TWAIN is a specification for an interface that allows a scanner to be controlled by any TWAIN-compliant application, instead of just by the software included with the scanner.
TWAIN is not a standard for allowing a computer to support two or more active input devices. Windows XP can support multiple active input devices by default.
TWAIN is not a standard for bidirectional communication between a computer and a printer. One standard that defines bidirectional communication between a computer and a printer is IEEE 1284 ECP/EPP.
TWAIN is not a specification that allows a computer to support two display devices. When the computer is a laptop computer, multiple display devices are supported by DualView. When the computer is a desktop computer, additional support is built into Windows XP that allows you to change the primary monitor.
Objective: Printers and Scanners
