IBM System/370 Model 155: Difference between revisions

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For the IBM System/370 Model 145, and pictures thereof, see IBM System/370 Model 145.
For the history of the System/360 Model 195, see IBM System/360 Model 195. For the history of the System/370 Model 195, see IBM System/370 Model 195.
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The '''IBM System/370 Model 155''' (and the [[IBM System/370 Model 165|Model 165]])<ref name=IBMarc.165>{{cite web|url=https://www.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP3165.html|title=System/370 Model 165|website=IBM Archives|date=23 January 2003|publisher=IBM|archive-url=https://web.archive.org/web/20230729090329/https://www.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP3165.html|archive-date=2023-07-29|url-status=dead}}</ref>
were jointly announced Jun 30, 1970<ref name=IBMarc.155>{{cite web|url=https://www.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP3155.html|title=System/370 Model 155|website=IBM Archives|date=23 January 2003|publisher=IBM|archive-url=https://web.archive.org/web/20230516082850/https://www.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP3155.html|archive-date=2023-05-16|url-status=dead}}</ref> as "designed for ... the Seventies." That same day [[IBM]] announced the 370/195.<ref group="NB">coming about 14 months{{cite after the announcement of the 360web|url=https:/195/www.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP3195.html|title=System/370 BothModel 195|website=IBM machinesArchives|date=23 wereJanuary withdrawn Feb2003|publisher=IBM|archive-url=https://web. 9, 1977archive. see org/web/20230729090333/https://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP2195mainframe_PP3195.html|archive-date=2023-07-29|url-status=dead}}</ref> They were the first three models of the [[IBM System/370]] line of computers.
and https://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP3195.html</ref> They were the first three models of the [[IBM System/370]] line of computers.
 
Since none of them came with [[virtual memory]], "which was to be a hallmark of the 370 line",<ref name="what-course-for-the-3081">{{cite news|newspaper=Computerworld|date=November 24, 1980|page=34|url=https://books.google.com/books?id=cKmJJd7R8PIC&pg=PA34|title=What Course for the 3081?}}</ref> some said about these early members of the [[IBM System/370]] family, especially about the 155 and 165, that they were not "the real 370 line."<ref name="what-course-for-the-3081" />