vintage computers in active use

[Rod Smallwood]

On 27/05/2016 22:17, Jay West wrote:
> Ian wrote....
> -----
> When I suggested modernizing, I was told that changing the hardware would
> require *re-certifying the entire workflow*.  In other words, it was far
> more economical to maintain a 70's era computer than spec, design,
> acquire/build and certify a new system.
> -----
>
> Then Gene wrote...
> -----
> Considering how military avionics systems work, this is entirely plausible.
> -----
>
> Then Paul wrote...
> -----
> Not only plausible but reasonable.
> -----
>
> I can confirm first hand that it is not just plausible or reasonable - but
> factual. On occasion I have sold or repaired HP 1000 stuff for DOD branches
> and/or contractors. A time or two I discussed emulators or some type of
> modern replacements, asking why those weren't considered. They flat out said
> exactly what Ian said above: "When you're dealing with {insert name of
> lethal weaponry}, control systems must be known to function identically in
> every conceivable case and that certification process is exceedingly
> expensive". Usually followed by "we'll do it, after no more boards or
> repairs are to be had - but at that point those {weapon} systems may not be
> around anymore."
>
> Best,
>
> J
>
>
>
Its a great cover story.  Our weapons are so out of date we have to use 
computer systems of a similar age to look after
them.

R