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Assuming that the said PIC16F877A supports RS 232,I think it can be done,the way you have shown the connections in the circuit diagram...It is worth a try.But what will you use it for?
What are some applications,that you can think of,will be using this arrangement system..?
Try to make the connections and test the system,and let me know what happens..
this system can be used in sms alarm system
the advantage of the GSM modem is the small footprint - the aerial tends to be larger than the modem these days!Well can you please tell me the advantage of usinga phone over a GSM module for SMS alarm system?
the advantage of the GSM modem is the small footprint - the aerial tends to be larger than the modem these days!
if it has a TCP/IP stack one can send UDP datagrams, connect to TCP servers (e.g. use FTP to download and upload files), etc etc
add GPS and you can determine location