A 1200dpi Scanner Windows driver is software that allows a scanner, capable of scanning at a resolution of 1200 dots per inch (dpi), to communicate with your Windows computer. The driver translates the scanner's signals and actions into commands that your operating system can understand and execute. The dpi rating (1200dpi) refers to the scanner's resolution, meaning it can scan images at 1200 dots of detail per inch, providing high-quality, detailed scans suitable for professional or archival purposes.