PURPOSE:To realize the mass production of a neuro chip having a learned neural network by using a storage cell on which data for learning is written. CONSTITUTION:The learning of a neural of a neural network circuit 11 is performed by using a ROM circuit 12 storing the data for learning, detecting the application of a power source by a control circuit 14, and transferring the data for learning incorporated in the ROM 12 to the neural network circuit 11. Here, the mass production of the storage cell ROM 12 on which the data for learning is written can be realized by using the manufacturing technique of a semiconductor. In such a way, it is possible to realize the mass production of the neuro chip 10 having the learned neural network.
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