[TUHS] Remember the ed thread?

M Douglas McIlroy m.douglas.mcilroy at dartmouth.edu
Tue Mar 30 09:21:34 AEST 2021

> the hammer fired to make an impression the ribbon on the paper, which was
> caused the noise people associated with computer printers.

GE outdid the printer with a fantastically fast pneumatic card reader. The make
and break of the suction on each card repeated at aural frequency and so loud
that I hied off to the instrument stockroom to borrow a noise meter. It was 90db
at the operator's position.

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