Abstract: A joystick module includes a base, a joystick body, a joystick cover and a second protruding edge. The base includes a casing and a first protruding edge. A top part of the casing has an opening. The first protruding edge is formed on a periphery of the opening of the casing. The joystick body is installed in the base. A first end of the joystick body is protruded through the opening so as to be rotated. The joystick cover is installed in the base and connected with the joystick body. In response to a rotation of the joystick body, the joystick cover is correspondingly rotated. During the rotation of the joystick body, a part of the second protruding edge is contacted with an inner surface of the casing. When the part of the second protruding edge is contacted with a part of the first protruding edge, the rotation of the joystick body is limited.

Abstract: A reflection-type scanner that can be mounted inside a host computer case of a computer to scan an object to be scanned includes a housing device to be disposed inside the host computer case, an image pick-up device mounted inside the housing device for scanning the object, and a feed-in device constructed inside the housing device to move the object to be scanned by the image pick-up device. The reflection-type scanner of present invention no longer requires a moving space for scanning as in the prior art, but stabilizes the scanning speed and direction, and simplifies the operation in that a user only needs to insert the object to be scanned between the rollers or place it on the tray of the scanner and the scanner takes over the rest of the work. Moreover, the scanner can be integrated into the computer system so that the user need not bother setting up the scanner in the computer and constructing the wires and connectors between the scanner and the conputer, and the cost can be lowered.