Oldest machine

[woodelf]

Jules Richardson wrote:

> 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 guess a straight 8 would be the most likely, but the PDP-1 and other 
machines may be accesed by list members if not owned.