Changeset 127 in t29-www


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Timestamp:
Nov 21, 2009, 12:10:23 AM (10 years ago)
Author:
sven
Message:

Plated wire storage: Einen missglueckten Satz korrigiert

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1 edited

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  • en/devices/plated-wire-storage.shtm

    r93 r127  
    3030    </div>
    3131
    32     <p>In the early 1970s, magnetical core memory was quite expensive and slow. That is, the cycle time (time needed to read and rewrite the information) was quite long, because all information had to be rewritten after they had been read. Furthermore the storage medium was not consistent, all stored informations vanished after the power supply was turned off.
    33       <br/>As a replacement, the plated wire was invented, just before the first semiconductor memories were ready for beeing mass-produced. The plated wire consists of magnetic wire which replaces the cores (see picture at the right).</p>
     32    <p>In the early 1970s, magnetical core memory was quite expensive and slow. That is, the cycle time (time needed to read and rewrite the information) was quite long, because all information had to be rewritten after they had been read. Semiconductor memory was not ready for series production for a long time yet, furthermore nobody even thought about non-volatile semiconductor memory at that time. So there was a need for a new consistent storage medium.
     33      <br/>As a solution, the plated wire was invented, just before the first semiconductor memories were ready for beeing mass-produced, supposed to be a replacement for the magnetical core memories. The plated wire consists of magnetic wire which replaces the cores (see picture at the right).</p>
    3434    <p>The installations from the UNIVAC 9000 series (like our <a href="/en/devices/univac9400/univac_9300.shtm">UNIVAC 9300</a>) were equipped with plated wire storages. We could offer pictures of our storage units, but the assembly of this type of memory is quite opaque. Therefore we publish self-drawn diagrams to illustrate the plated wire characteristics.</p>
    3535
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