PC-based IBM mainframe-compatible systems: Difference between revisions

Revision as of 06:02, 9 July 2007

Revision as of 23:06, 10 September 2007

Line 2:

==Background==

Up until the late 1980s1990's, mainframes were very large machines that often occupied entire rooms. The rooms were often air conditioned and had special power arrangements to accommodate the [[three3-phase electric power]] required by the machines.

==System/370==