RS-232 vs TTL Serial Communication One of the tools we use most when debugging our projects is serial [ http://en.wikipedia.org/wiki/Asynchronous_serial_communication ] input/output. Serial is very easy to implement, and it allows you
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NulSom Inc. NS-TRS232-02 Ultra Compact RS232 to TTL Converter with Male DB9 (1.8V 3.3V 5V, up to 1Mbps)
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