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signal lines. The single stuck-at fault model is ''structural'' because it is defined based on a structural gate-level circuit model.
A pattern set with 100% stuck-at fault coverage consists of tests to detect every possible stuck-at fault in a circuit. 100% stuck-at fault coverage does not necessarily guarantee high quality, since faults of many other kinds -- such as bridging faults, opens faults, and transition (aka delay) faults -- often occur.adfadfadf
== Sequential ATPG ==
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