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In this proposed system the idea of wireless Digital Circular System Using GSM Technology has been presented. So our main aim is to reduce paper work and time. In this paper we are trying to implement our system in such a way that it can display message from authorized user sends to GSM module which is located on the class rooms.So in short, the GSM module which is located at class room projectors receives the message from authorized user and displayed on screen. So spreading of important message or notice will be takes place within very short span of time.The transmitter side is the principal room, and he can send the messages whatever he wants to inform to this college staff or student using pc or mobile and the transmitted message is received through the GSM modem.Then the received message is displayed on the projector screen and also message receiver voice and buzzer alert is implemented in this system.

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Vijayalakshmi. R, Arul Selvan. C, Balakrishnan. K, Kavin Kumar. P, & Mahabalaji. P. (2017). Wireless digital circular system . International Journal of Intellectual Advancements and Research in Engineering Computations, 5(2), 1162–1167. Retrieved from