[RndTbl] How much did one second of computer time cost in 1975?
athompso at athompso.net
Tue Oct 26 00:27:59 CDT 2021
Whoops. Definitely not 1975. I know most systems *were* operated on a chargeback basis then, but I didn't even know computers existed in '75. Maybe email the docents at the Computer History Museum?
On October 26, 2021 12:17:13 a.m. CDT, Adam Thompson <athompso at athompso.net> wrote:
>There are many people here who used the UofM mainframe back when it was updated on a chargeback system (including me, sadly, although my Dept paid the bill, not me).
>Of course I didn't keep a copy of the rate sheet, so I don't remember what 1sec cost.
>It wouldn't quite be the fully-loaded cost you describe, but it would be close - I don't think Computer Services was expected to turn a profit back in 1991.
>On October 25, 2021 8:56:07 p.m. CDT, Brian Lowe <brian2 at groupbcl.ca> wrote:
>>Today with multi-core CPUs running at gigahertz speeds attached to gigabytes
>>of RAM and terabytes of disc space, we're well used to running programs that
>>require what would be enormous resources back when mainframes ruled the data
>>My question is "how much did one second of computer time cost in 1975?" This
>>assumes the program in question is being run on a mainframe from IBM or any of
>>the other manufacturers of the day. Of course, there are a lot of factors to
>>consider: leasing costs, staffing, power and cooling, if the system could run
>>more than one program simultaneously, and how computer time was charged back
>>to the users.
>>I'm interested to know if anyone on this list has had experience with this
>>sort of system accounting, and if they can recall some numbers.
>>Roundtable mailing list
>>Roundtable at muug.ca
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