rectangular sense core vs. diagonal

william degnan billdegnan at
Wed Jun 7 09:12:53 CDT 2017

Where there any computers that used a "rectangular sense" core RAM?
Whirlwind core is diagonal.   This page describes the differences/evolution
of the sense line.


Were rectangular core planes used in any commercial/government computer
that saw production activity, presumably the period 1953-1959?    Whirlwind
is known for diagonal sense planes, but was there a brief period when the
core was "rectangular sense"  I know core was added to Whirlwind as an
upgrade, it did not launch into production with core.  (right?)



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