How to Interface SIM900A GSM with 8051 microcontroller
GSM SIM900 Global System for Mobile Communication (GSM) is a digital cellular network standard widely used for mobile devices and long-distance communication. Several GSM modules are available on the market, including the SIM900, SIM700, SIM800, SIM808, and SIM5320. The SIM900A module supports data transfer over GPRS, SMS sending and receiving, and voice calls. It communicates …
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