The present invention is to provide an electrical connection material through which an electrical connection via conductive particles can be performed reliably regardless of a little unevenness of an object. The insulation layer is formed after the gate structure and integrate dielectric of the non-volatile memory cell, and a gate of a logic transistor are formed. The cube may be rotated to allow the user to select from an unlimited number of desktops. A method of using a cart for supporting a plurality of objects includes inserting a first object into a first compartment at a first position; rotating the drum about a horizontal axis to move a second compartment to the first position; and inserting a second object into the second compartment.