[vcf-midatlantic] Happy Birthday IBM-PC

Dave McGuire mcguire at neurotica.com
Fri Aug 13 19:27:34 UTC 2021

On 8/13/21 3:24 PM, Ethan Dicks via vcf-midatlantic wrote:
>> I don't think anyone had GB of anything back in the 80's. I remember back
>> then when our IBM mainframe was upgraded to 1mb of core memory and that was
>> serving 3 hospitals with 100's of terminals.
> When I first started working at Software Results in the Fall of 1984,
> me and one of the other student workers were marveling at the
> 32-bitness of the VAX-11/750 (with 8MB of physical RAM in a 4GB
> virtual address space) and trying to envision how expensive and how
> large *Four Gigabytes* of RAM would be, and it was *immense*.
> This same machine (8MB RAM) could handle 70 dumb terminal users, but
> to be fair, it did swap a bit over 40 users.  The two fattest apps we
> had were were VMS MAIL and MASS-11 (word processing).

  I will take this opportunity to point out that that model has a clock
speed of 3.125MHz.

  This is what efficient design is all about.


Dave McGuire, AK4HZ
New Kensington, PA

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