Electronic Earth

Using the computer as a simple electronic switch?

I took a picture to leave everything as simple as possible. If Please refer to this image: http://tinypic.com/view.php?pic=1zwfbrd&s=4

I liked the form of a draft back in my school days. Just connect a printer circuitary to parallel or serial port or joystick. When you write 1 to port (using a C program) that acts as a switch ON and 0 for OFF. If you send a series binary data in an interval of 1 second LED blinks 11,111,111. Thats the Bottomline concept. You will need to refer to the kinds of PC ports for information specific needs.

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