2 Feb
2007
2 Feb
'07
2:41 p.m.
On Friday 02 February 2007 14:15, William Donzelli wrote:
I was an IBM Field Engineer on the IBM 7090 and checked out a 7070 while at
IBM Poughkeepsie in 1962. It was all transistor, as was the 7090.
Last big IBM tube machines were the IBM 704 and 709.
No, it was a
7070, "IBM seven oh seventy", and it used hundreds if not
thousands of 12au7s or 12ax7s don't remember which it was. And it was
definitely NOT solid state.
I do not know if IBM made a 707, but I would bet that would be it. The 7070s were made from solid state modules, probably
using the SMS
packaging system.
Here's three IBM archive pictures/statments on the IBM 7070:
http://www-03.ibm.com/ibm/history/exhibits/endicott/endicott_chronology1950…
(announcement September,1958)
http://www-03.ibm.com/ibm/history/exhibits/vintage/vintage_4506VV2070.html
(all transistor)
http://www-03.ibm.com/ibm/history/exhibits/italy/italy_ch2.html
(see 1960/61)
> Maybe IBM used some numbers over? But I am
absolutely sure of the number
> because we called it by that name when referring to it.
The IBM 77 was a colator, no 707 was produced.
Cheers,
Lyle
--
Lyle Bickley
Bickley Consulting West Inc.
Mountain View, CA
http://bickleywest.com
"Black holes are where God is dividing by zero"