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<a accesskey="3" href="page.php?w=storage_tube&amp;p=2">3.Next</a>
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<p><a href="page.php?w=Image%3ATektronix_4014.jpg">right</a><b>Storage tubes</b> are a class of <a href="page.php?w=cathode-ray_tube">cathode-ray tube</a>s (CRTs) that are designed to hold an image for a long period of time, typically as long as power is supplied to the tube.</p>

<p>A specialized type of storage tube, the <a href="page.php?w=Williams_tube">Williams tube</a>, was used as a <a href="page.php?w=main_memory">main memory</a> system on a number of early <a href="page.php?w=computer">computer</a>s, from the late 1940s into the early 1950s.</p><p>
<a accesskey="3" href="page.php?w=storage_tube&amp;p=2">3.Next</a>
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