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

Tony Duell ard at p850ug1.demon.co.uk
Mon Dec 19 18:19:11 CST 2005

> 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?)

Some 'earlies' from my collection : 

HP9830 (1973), desktop computer running BASIC from ROM

Philips P850 (1970), minicomputer with core memory

HP9100B (1969) programamble scientific calculator

Casio AL1000 (1967?) very simple progammable calculator

The first 2 use TTL chips, the last 2 are all discretes.


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