Black Box -

: It actually consists of two separate units: the Flight Data Recorder (FDR) , which tracks parameters like airspeed and altitude, and the Cockpit Voice Recorder (CVR) , which records conversations and ambient sounds.

In aviation, a black box is a heavily protected recording device used to investigate accidents. black box

: This is a software testing method where the tester evaluates functionality (like logging in with a valid password) without knowing the internal code structure. : It actually consists of two separate units:

: Many machine learning models are considered black boxes because even their creators cannot easily explain how the system reached a specific decision. and the Cockpit Voice Recorder (CVR)

In computing, a "black box" refers to any system where the internal logic is opaque.