In dictionaries:
Power-on self-test
A power-on self-test is a process performed by firmware or software routines immediately after a computer or other digital electronic device is powered on.
Built-in self-test
A built-in self-test or built-in test is a mechanism that permits a machine to test itself.
Logic built-in self-test
(or LBIST) a form of built-in self-test in which hardware and/or software is built into integrated circuits allowing them to test their own operation, as opposed to reliance on external automated test equipment.
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