On Jan 27, 2010, at 5:09 PM, Jules Richardson wrote:
The odd thing there is that I've seen knobs and
switches and such
'tactile' devices at the high end of the market - so it sounds
almost as though buttons and displays has become cheaper than the
"old fashioned" way of doing things on the low-end stuff.
Well, the reasoning for this is simple.
Toggle switches are very expensive, and so are knobs: variable
resistors, rotary switches, and shaft encoders, typically in order of
increasing expense. Pushbutton switches are a bit cheaper but still
pretty pricey.
Membrane switches, on the other hand, are dirt cheap. They're
produced via a printing process. Logic is also cheap.
-Dave
--
Dave McGuire
Port Charlotte, FL