working magnetic drum stores?
> LGP-21 fixed-head-platter mechanical memory (main store,
> not "disk") the heads sit crashed (sic) and lift when up to
> speed. The platter surface has fine scoring -- it's normal. It's
> only 80 bits per inch. Nickel plated steel. In fact, there's
> little springs that press the heads DOWNWARD.
FWIW, the springs on hard disk heads press the heads _towards_ the
platter too. Look at something like an RK05 sometime. The heads are
lifted by flying on the air dragged round by the platter.
-tony
Received on Tue Mar 30 2004 - 17:31:38 BST
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