Abstract – In this technical paper sms based wireless e-notice board explains how to establish an effective and reliable communication between a mobile phone and a microcontroller using GSM modem. This GSM based e-notice board has various applications used in several domains including banks, stoke exchanges, traffic control, public advertisements, educational sector i.e., in schools and colleges etc. In all the above mentioned applications we will use a GSM MODEM, but with a little change in hardware. Along with this I will explain you how this applications are used in low time-to-market and how to upgrade the software resulting low NRE(Non recurring Engineering).This technical paper plays a prominent role in the state-of-the-art scenario to develop authentic and pocket friendly products where the real time market is relentlessly shrinking. Keywords – GSM, microcontroller, MODEM ,software, mobile communication , bridge- rectifier, transformer ,interfacing ,SIM, LCD, traffic control. I. INTRODUCTION Wireless communication has announced its arrival on big stage and the world is going mobile. We want to control everything and without moving an inch. This remote control electronic notice board is possible through Embedded systems. The use of "Embedded system in communication" has given rise to many interesting applications that ensures comfort and safety to human life. GSM(Global System for Mobile Communication) is globally accessed by more than 212 countries and territories. Global system for mobile communication is optimized for duplex voice telephony. GSM, initially developed for the replacement of first generation (1G) technology, now it is upgraded for second generation (2G) technology and third generation (3G) technology.
With the alliance of microcontroller, GSM MODEM could be further used for some of very innovative applications including, GSM based home security system, GSM based robot control, GSM based DC