This document describes an embedded system that uses a dsPIC microcontroller to receive SMS text messages via a GSM modem and display them on an LCD screen. The system is intended to publicly display messages sent to its associated mobile number in places like malls, hospitals, and other public areas as a notification or public address system. SMS is defined as the most widely used data application, with over 3.6 billion active users sending short text messages between mobile devices using standardized communication protocols.

1. Embedded dsPIC microcontroller based SMS text Message LCD
display system
Short Message Service (SMS) is a text messaging service component of phone, web, or mobile
communication systems, using standardized communications protocols that allow the exchange
of short text messages between fixed line or mobile phone devices.
SMS is the most widely used data application in the world, with 3.6 billion active users, or 78%
of all mobile phone subscribers. The term "SMS" is used as an acronym for all types of short
text messaging and the user activity itself in many parts of the world. SMS is also being used as
a form of direct marketing known as SMS marketing.
This project is used to display SMS Messages in a LCD screen. A Message sent to a remote
mobile number is read using a GSM Modem and is displayed on the LCD display. It will be useful
in Public Address systems, Shopping Malls, Hospitals and public places to display a Message to
all the peoples in the common places.

2. An Example of Common Message display Systems
DC Power Supply +12V
DC Power Supply
+5V
GSM Modem
(sim900 module)
Microcontroller
DsPIC30F4013
LCD Display
RS232
User Hand in Mobile Phone