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adisinom
on Aug 28, 2017
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Software development and screen readers at 450 wor...
They're actuated by piezoelectric strips. The PZT ceramic is low power and robust, but heavy-ish (lead), large-ish, and shockingly expensive.
History:
https://nfb.org/images/nfb/publications/bm/bm00/bm0001/bm000...
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History: https://nfb.org/images/nfb/publications/bm/bm00/bm0001/bm000...