Apparatus for supporting a disk drive with a rotating disk about a disk axis and an arm which pivots over the disk about an arm axis. The data storage device efficiently prevents unauthorized access to the security code by allowing command descriptor block information to be read using only a read-only memory. The second control signal carries information to be used in communication performed with a second frequency band. An electronic system includes a semiconductor apparatus as described above. The center axis of the outer needle and the center axis of the tube at its head section are substantially parallel with each other with the inner needle inserted into the outer needle.