1952: Reynold Johnson, IBM engineer, developed a massive hard disk consisting of fifty platters, each 2 ft wide, that rotated at 1200 rpm.

by admin on March 29, 2013

1952: Reynold Johnson, IBM engineer, developed a massive hard disk consisting of fifty platters, each 2 ft wide, that rotated at 1200 rpm .

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1952: Reynold Johnson, IBM engineer, developed a massive hard disk consisting of fifty platters, each 2 ft wide, that rotated at 1200 rpm.
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