The image processing device of the invention generates dot data representing dot on-off state in respective pixels of an image and supplies the generated dot data to a printing device. A fitting portion of the second connector is formed with slanted surfaces inclined to reduce the width of the fitting portion toward the back side of the fitting portion. The method and apparatus also provides a virtual multi-headed microscope function which allows scattered viewers to simultaneously view and interact with a coherent magnified microscopic image. A corresponding system is also described.