12 Sep
2005
12 Sep
'05
7:17 a.m.
On Mon, 12 Sep 2005, Tore S Bekkedal wrote:
"...the Type 726 tape units used in the 701
computer system, produced in
1953. They operated at 75 ips, with a tape-recording density of 100bpi."
http://www-03.ibm.com/ibm/history/exhibits/701/701_1415bx26.html
and as this picture shows, it was vacuum-column.
The SAGE system (AN/FSQ-7) used the same IBM type 727 tape drives as
used in the IBM 650:
http://www.columbia.edu/acis/history/650.html
Mike Loewen mloewen at cpumagic.scol.pa.us
Old Technology http://ripsaw.cac.psu.edu/~mloewen/Oldtech/