Hall-effect keyboard query / was Re: Sources for 8b TTLkeyboards (Keytronics)

Chuck Guzis cclist at sydex.com
Fri Dec 5 00:35:22 CST 2008

On 4 Dec 2008 at 22:21, Brent Hilpert wrote:

> Put another way, was Micro Switch (the company) a spin-off or subsidiary of
> Honeywell? Some web references seem to imply an association in the development
> of integrated Hall-effect sensors in the late-60s with Honeywell, but there is
> some confusion in there regarding Honeywell and their earlier (1940s)
> development of simple mechanical microswitches.
> (I'm just not familiar with Micro Switch as a company.)

Micro Switch was founded in 1932 and acquired by Honeywell in 1950.  

Cherry, for a long time a "work alike" of Micro Switch (when it came 
to snap switches) was founded in 1953 and was another big source of 
keyboards (still is).


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