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http://www.scienceprog.com/24x24-led-dot-matrix-display-control
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http://www.gedasymbols.org
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http://www.scienceprog.com/ease-h-bridge-on-mosfet-irf7105-transistors
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http://www.scienceprog.com/alternatives-of-max232-in-low-budget-projects
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http://www.scienceprog.com/connect-nokia-3310-lcd-to-lpt-port
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http://www.scienceprog.com/acces-lpt-...ports-easily-under-windows-nt-2000-xp
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http://www.prism54.org/mustumbler.html
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http://www.scienceprog.com/drive-dot-...-display-using-lpt-port-and-driver-ic
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http://reopen911.online.fr