A neural network device includes internal data input lines, internal data output lines, coupling elements provided at the connections of the internal data input lines and the internal data output lines, word lines each for selecting one row of coupling elements. The coupling elements couple, with specific programmable coupling strengths, the associated internal data input lines to the associated internal data output lines. In a program mode, the internal data output lines serve as signal lines for transmitting the coupling strength information. Each of the coupling elements includes memories constituted of cross-coupled inverters for storing the coupling strength information, first switching transistors responsive to signal potentials on associated word lines for connecting the memories to associated internal data output lines, second switching elements responsive to signal potentials on associated internal data input lines for transmitting the storage information in the memories to the associated internal data output lines. Each of the internal data output lines has a pair of first and second internal data output lines.