PURPOSE:To obtain the neural network with superior learning effect by performing the function of neurons of a living body and learning operation by a simple hardware circuit and simulating the operation of a perceptron. CONSTITUTION:An increase and a decrease in the degree of electric coupling of each synapse circuit 1 and the stop are controlled with a supplied control signal to learn each synapse circuit 1 by what is called the most abrupt dividing method. An analog signal which is outputted by the synapse circuit 1 and integrated is level-decided by a signal converting means with a specific threshold voltage and converted into a binary start signal (y). In learning operation, the operation of the perceptron is simulated by varying the degree of coupling of synapses between an input xi and an output yi, i.e., the degree Wij of coupling of a variable coupling element 5 from Wij to Wij+epsilon.xj (ti=yi) by a rediving method by using a tutor signal ti. Therefore, the converging speed of the degree Wij of coupling is fast and the learning operation is performed efficiently.
NEURAL NETWORK