一种具有新颖结构的半导体设备，其中，即使当没有电力被供应时仍然可以固持存储的数据且对写入的次数没有任何限定。在半导体设备中，均包含第一晶体管、第二晶体管、及电容器的多个记忆胞系以矩阵形式来予以配置，以及，用以连接一个记忆胞至另一个记忆胞的布线(也称为比特线)及第一晶体管的源极或汲极电极经由第二晶体管的源极或汲极电极而彼此电连接。因此，布线的数目小于第一晶体管的源极或汲极电极与第二晶体管的源极或汲极电极连接至不同布线的情形中之布线数目。因此，能够增加半导体设备的集成度。

A semiconductor device with a novel structure in which stored data can be held even when power is not supplied and there is no limitation on the number of times of writing. In the semiconductor device, a plurality of memory cells each including a first transistor, a second transistor, and a capacitor is provided in matrix and a wiring (also called a bit line) for connecting one memory cell to another memory cell and a source or drain electrode of the first transistor are electrically connected to each other through a source or drain electrode of the second transistor. Accordingly, the number of wirings can be smaller than that in the case where the source or drain electrode of the first transistor and the source or drain electrode of the second transistor are connected to different wirings. Thus, the degree of integration of the semiconductor device can be increased.