[time-nuts] MTBF (was Rubidium standard)

Poul-Henning Kamp phk at phk.freebsd.dk
Wed Nov 18 23:06:38 UTC 2009


In message <cb8.5c4f5c26.3835d6b2 at aol.com>, SAIDJACK at aol.com writes:

>A single transistor, ROM bit, solder-joint, or resistor failure could have  
>killed them.

Actually there were a perfectly good spare in the lunar lander module
and most single points of failure would not kill them, but merely
cause the mission to abort and head home.

They also hard backup navigational aids.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.



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