Simulation techniques for fault diagnosis of digital circuits based on LASAR

On the basis of scientific research projects recently completed by the author, and through analysis for contents of fault test, this paper makes a detailed description of methods for fault test, which provides fault dictionary method, coding method and comparison method. The assay mainly stipulates fault simulation analysis based on LASAR (Logic Automatic Stimulate and Response), and gives four major steps of the development for fault simulation software including modeling of tested unit, simulation of a normal board, fault simulation and post-treatment, and realizes 96.59% of fault coverage rate of excitations.