Transcription of algorithms used for fault-diagnosis of digital systems into computer programs

There are several algorithms for fault diagnosis of digital systems which are used throughout academic and industrial environments. Among those algorithms, TMEAS and SCOAP find particular appeal because of their simplicity in calculating testability of a given digital circuit and in imparting useful information to test engineers regarding the test-locations most vulnerable to occurrence of stuck-at-zero and stuck-at-one faults. In this paper, we have presented summary of TMEAS and SCOAP techniques and then presented results of simulations based on these techniques using a software developed by us. Testability calculations, using the developed software, for a few test circuits are also outlined.