| 1. | By 1954, those unreliable methods were mostly replaced by magnetic core memory.
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| 2. | Two key inventions led to the development of magnetic core memory in 1951.
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| 3. | The DATANET-30 used magnetic core memory with a cycle time of 6.94 ?s.
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| 4. | Both were made obsolete by the invention of magnetic core memory.
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| 5. | An Wang was an important contributor to the development of magnetic core memory.
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| 6. | The original system had 2k of non-volatile magnetic core memory.
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| 7. | The IBM AP-101 computers originally had about 424 kilobytes of magnetic core memory each.
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| 8. | The 704 also marked the transition to magnetic core memory.
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| 9. | KDF8 was a transistor based machine with magnetic core memory.
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| 10. | Magnetic core memory was used until around 1979 . Work stations used storage tube displays.
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