We all use digital cameras and scanner devices all the time with our computers. Being able to use these two together may be something we take for granite, if you do not know the history of Twain Drivers.
Before Twain Drivers were introduced in 1992, manufactures were able to design their own standards for communication between the image devices (ie: scanners, digital cameras) and software.
About Twain Drivers
In order to work with a scanned image, you needed to scan and then save the image onto disk. Then you needed to start the software and open the file with the image.
A lengthy process for just viewing scanned items. This grew to be a large compatibility problem for many PC users. That is why Twain Drivers were developed.
Twain Drivers usually come within the installation software that comes with the image device. Or you may get them directly from the manufacturer of the image device.
Many of you have already done this process, but may not have realized what happens when doing this. Just remember, image receiving from outside devices is much easier than it use to be, because of Twain Drivers.