[TUHS] Remember the ed thread?

Rich Morin rdm at cfcl.com
Tue Mar 30 13:39:04 AEST 2021

I spent a few years working with a CDC 3800, which also had a pneumatic card reader, along with several other noisy peripherals.  Although I have no way to prove this, I suspect that my current hearing issues stem from the noise in that machine room.


> On Mar 29, 2021, at 16:21, M Douglas McIlroy <m.douglas.mcilroy at dartmouth.edu> wrote:
> 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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