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An Easy Two-Wire LCD, article 2014 year from the Nuts And Volts magazine.
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The complete article title and additional information: An Easy Two-Wire LCD by Thomas Henry. SECTION: Features. ABSTRACT: Inexpensive LCDs show up all the time on the surplus market, but they usually require either four or eight data lines in addition to several control lines. Of course, you could always dip into your wallet and spring for more advanced displays. However, with just a pittance of external parts, it is easy to reconfigure even the humblest LCD to run well on only two port lines of a microcontroller. This article describes just such a technique. For quick and free download you can go straight to the required section of the Library.
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