> Among other things, we included lots of sanity checks 
> internally so that
> any inconsistency found, no matter how small, would lock the 
> instrument
> up and display an error code with a message to call me and tell me
> exactly what this said, that I could trace this to a specific line of
> code. Those mostly served to show us the mistakes before we 
> ever shipped
> the first instrument.  But they also allowed me to precisely diagnose
> and correct an error found by a customer thousands of miles away.

Good practice indeed, but how do you apply that to a space shuttle in
descent? For one thing, AFAIK a cell phone does not work at the critical
moments :(

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu
 

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist