Abstract: A signal is supplied to a number of synchronizing circuits with a small skew. A signal supply circuit (400a) includes four driver circuits (1a), (401), (402) and (403). The driver circuit (1a) receives an input signal which is supplied to synchronizing circuits (301) to (332). An output of the driver circuit (1a) is supplied to the left-hand side edge of a first wire (5). The driver circuits (401), (403) and (402) are disposed at the left-hand side edge, the right-hand side edge and a center of first wire (5), respectively, so that outputs from the driver circuits (401), (403) and (402) are supplied to a second wire (6). Input terminals of the synchronizing circuits (301) to (332) are each connected to the second wire (6). The driver circuits (401), (402) and (403), i.e., second signal transmitting elements, start transmission in this order, and therefore, a transition of the signal becomes abrupt at the driver circuits (401), (402) and (403) in this order.

Abstract: Plural kinds of metal wiring patterns on which a lid is to be put are formed on a package body. The wiring patterns connected to an IC chip are changed depending upon the size of the lid which is put on the package body. Either of an IC chip operated by a single power supply and an IC chip operated by positive and negative power supplies can be packaged without changing the wiring patterns in the package.