The integrated circuit includes a nexus and first, second, third, and fourth circuit boards. Each of the first and second circuit boards is connected to the opposite side of the nexus, and each of the third and fourth circuit boards is connected to the opposite side of the second circuit board. An integrated circuit includes a first open configuration, wherein the first, second, third and fourth circuit boards and nexus are substantially coplanar, and the first, second, third and fourth A transition can be made between a second configuration in which the circuit board and the nexus are connected together to define a cavity therein. [Selection] Figure 4A集積回路は、ネクサスと、第１、第２、第３、および第４の回路基板とを含む。第１および第２の回路基板のそれぞれは、ネクサスの対向する側に連結され、第３および第４の回路基板のそれぞれは、第２の回路基板の対向する側に連結される。集積回路は、第１、第２、第３および第４の回路基板およびネクサスが実質的に同一平面上にある、第１の開放構成と、前記第１、第２、第３および第４の回路基板と前記ネクサスとが互いに連結されて内部にキャビティを画定する、第２の構成との間で遷移可能である。 【選択図】図４Ａ
