Research and Realization of Digital Circuit Fault Probe Location Process

This paper presents three core files relating to circuit fault diagnosis which is generated by LASAR (logic automated stimulus response), i.e. fault dictionary, node truth table and pin connection table, analyses the content of fault dictionary, pin connection table and node truth table, finds the necessary information for fault location, summarizes the procedure of circuit test and fault location. Finally the digital circuit diagnosis system which can locate the fault on the pin of components is designed. With the help of probe, fault location of component pins can be accurately pinpointed.