What's the black box?
The term black box is a placeholder name used casually to refer to a collection of several different recording devices used in transportation: the flight recorders (flight data recorder and roosterpit voice recorder) in aircraft, the event recorder in railway locomotives, the event data recorder in automobiles, message case in ships, and other recording devices in various vehicles.
I call my hard drive the black box. Mostly because mostly everything I've ever done is on it.
Plus my computer case looks like a black box.
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