Oldest machine (was: Re: Good haul of old pc stuph)

[Jules Richardson]

Tony Duell wrote:
>> One thing I love about my old IBM PC 5150 with ST-225 is that *it is still 
>> running 22 years later*.  I fire it up at least once a week to do some hobby 
> 
> Newcommer :-). My 32-year-old HP9830 still fires up.

That made we wonder... what's the oldest *operational* digital machine owned 
by anyone on this list?  Although I suppose it's hard to define 'machine' - 
something with RAM, I/O in some form, and at least one CPU  (what the heck do 
you call a CPU when it's no longer central?)

I remember the discussions a while back about age of list members, but I don't 
recall ever seeing a similar one about age of collections!

Not having all the peripherals that would have perhaps originally gone with 
the machine is acceptable I think (I can see some people having room for a 
mainframe and control desk, but probably not for a bazillion tape / drum units 
to go with it!). But other than that, make it complete (i.e. things like the 
single rack of EDSAC that we have - whilst perhaps "operational" - doesn't 
count :)


(I'd quite like to hear responses from people with analogue machines too, but 
someone else will be able to define qualifying rules much better than I can)

Just out of curiosity!

cheers

Jules