IBM 305 RAMAC
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| Date introduced | September 13, 1956 |
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| ID | 1415811 |
About IBM 305 RAMAC
The IBM 305 RAMAC was the first commercial computer that used a moving-head hard disk drive for secondary storage. The system was publicly announced on September 14, 1956, with test units already installed at the U. S. Navy and at private corporations.
IBM 305 RAMAC Photos
