[OT] One terabyte drive

James Knott james.knott-bJEeYj9oJeDQT0dZR+AlfA at public.gmane.org
Mon Mar 17 11:13:35 UTC 2008


phiscock-g851W1bGYuGnS0EtXVNi6w at public.gmane.org wrote:
>> Not quite in the same league, but in the early 90's I spent over $200
>> to upgrade my 4M 486/66 system to 8M (so, an additional 4M) so it
>> would run dBase IV under DOS for a client project (anyone remember
>> extended memory?). I earned $250 on the project which paid for the
>> extra memory, and also allowed me to run OS/2 faster, so that worked
>> out.
>>     
>
> Back in the 70's the core memory for a PDP-12 was $1 per word. The memory
> bits apparently were magnetic donuts hand-threaded by workers in Mexico.
> So an additional 4k words of memory would have cost $4096, back when that
> was a substantial portion of my annual salary. If you wanted compiler
> error messages, you had to buy this extra memory. Otherwise, all you got
> was the one word 'NO' in the middle of the screen.
>
> I do miss the flashing lights, but not having to manually toggle in a
> loader program.
>
>   
When IBM introduced core memory, back in the '50s, it was $1/byte.  I 
have a 16 K bit core memory plane, from a Collins computer here.  My 
first computer, an IMSAI 8080 had lots of lights and switches on it.
http://en.wikipedia.org/wiki/IMSAI_8080


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