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Reverse engineering the 59-pound printer onboard the Space Shuttle
The Space Shuttle contained a bulky printer so the astronauts could receive procedures, mission plans, weather reports, crew activity plans,...
As a result, NASA decided just seven months before the first Shuttle launch that they needed an interim system "for transmission of real-time, flight-plan changes and other operational data to the crew." The text is the teleprinter's built-in test message: "THE LAZY YELLOW DOG WAS CAUGHT BY THE SLOW RED FOX AS HE LAY SLEEPING IN THE SUN". These ports have functions such as reading the serial line settings (ASCII vs. Baudot, odd or even parity, number of stop bits, and current loop levels).
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