Interface GSM With Arduino

GSM stands Global System for Mobile communication It is a digital cellular technology used for transmitting voice and data services. GSM operate on mobile communication band 900mhz and 1800mhz,it operate on 850mhz and 1900mhz. GSM use narrowband Time Division Multiple Access (TDMA) technique for transmitting signals. GSM has different configuration : Sim300. Sim900. Sim900A. Sim300 … Continue reading Interface GSM With Arduino