Where (online or offline, online preferred) can I read about the
history of playback control symbols (play,
pause, eject, etc.)?

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Request for Question Clarification by omnivorous-ga on 24 Apr 2005 21:49 PDT

Boomspy --

This would be considered pretty vague by researchers.  Some things to consider:
*  mechanical or virtual (software) controls?
*  since the first recording devices?  Realize that wax cylinders were
early devices, following by vinyl records, then around World War II a
variety of magnetic devices.
*  since the beginning of the use of magnetic tape?
*  do you want to exclude paper tape?

Best regards,

Omnivorous-GA

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Clarification of Question by boompsy-ga on 25 Apr 2005 07:22 PDT

I'm interested in the development of the user interface aspect of
playback controls. Specifically:

* Why/how did the 'play' symbol develop into a triangle pointing to the right?
* Why is the stop icon a square?

etc...

Thanks!
Boompsy