Abstract: A scanning device includes a body, a paper-feeding module, a scanning module and two transmission modules. The body has a paper-feeding area and a scanning area stacked with each other. The paper-feeding module is disposed at the paper-feeding area in the body and the scanning module is disposed at the scanning area in the body. One of the transmission modules is disposed within the paper-feeding area and electrically connected to the paper-feeding module so as to convey a document from the paper-feeding area to the scanning area, while another of the transmission modules is disposed within the scanning area and electrically connected to the scanning module so as to drive the scanning module for scanning images on the document.

Abstract: A common socket device for memory cards is a common inserted base with an upper cover to offer a common space for receive a smart media card, a multimedia card, and a secure digital memory card. The common base may be inserted by two or three memory cards without a need of providing two or three kinds of different socket device. Therefore, contact points in the common socket device is reduced substantially, a less volume of the common socket device is obtained comparing to the gross volume of two or three conventional socket devices, and it enhance the convenience for the user.