Real world control from a Web page
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| You can create a Web form on an Apache/Linux server, process the data with
| a PHP script, then push the control instructions down to the
| microcontroller over the serial line. The microcontroller will run code
| that interprets the data from the serial line and instruct the I/O pins
| to perform some action. Basic applications might bdde to turn on
| lights, relays, or motors from a remote browser screen.
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http://hardware.newsforge.com/hardware/06/05/11/1517222.shtml
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