Pan Logic Operation Circuit

The thesis is based on the special research funds of the national educational institute (98069923) and the ShaanXi natural science funds project (98Xl5). The main object is to find out the physical implementation of Universal Logic operation model based on the Universal Logic theory. Accordingly, The Universal Logic theory is farther perfected and its practical applied bound is widened. The Universal Logic (UL), put forward by Prof. He, is a basal logic, which is emphasized on the Uncertain Reasoning. Its main character is that various logic operation models defined in the senate range [0, 11 could be consecutively changed with the controllable referenced parameter hE [0, 11. It could run inferential calculation accurately according to the actual existing parameter h by rule and line, So UL can describe the Uncertain Reasoning precisely. From the continuity of its discussional scope and the continuous controllability of its logic operation, UL is able to develop into an all梚nclusive logic. Fuzzy Logic is just one instance of the UL when h equals 1. Based on UL theory, this paper studies three circuit implementation methods of UL operation model and emphasizes on the analog implementation way. Because there are only two consecutive and changeable input variables in UL operations, it is typical and easy to implement by circuit. Through testing data and corresponding curves, it is proved that UL operations could be carried out through analog circuit. Moreover, using neural net (NN), the fact that logic operations could be done through learning the weights is proved. And also, the possibility of implementing UL making use of basic neuron is discussed theoretically. In the end, the rudimental operation circuit grounded on multi?~ transistor and the demonstration of the truth that more complicated circuit could be composed of one or more basic circuits is shown. And the controllable referenced parameter in UL is imported, making them become the basic circuits of UL and resulting in the simplicity and speediness of UL circuit. The latter two methods are just discussed in theory due to the limited time and funds.