• S. A. Bagal
• Aakanksha V.Rannaware
• Snehal B. Girhepunje
• Nupur R. Shal
• Shweta P. Butoliya

Now a days there is use of automation in every sector. Here we are presenting a new model. This model of ringing bell is used everywhere from schools to colleges. It avoid the human help with accuracy as it is automatic. It uses Real Time Clock(DS1307) which track the real time . The microcontroller P89V51RD2 is used to control all the functions through program. When this programmed time equals the real time then the bell is switched ON via Relay for predetermined time at normal class timings as well as exam times. Also we are using “GSM based LED Scrolling display Board” for displaying notices/messages at the places which require the real time, by sending SMS containing message through mobile. The SMS is deleted from the SIM each time it is read, thus making room for the next SMS.

"Microcontroller Based Automatic College Bell With Monitoring System", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.2, Issue 3, page no.541-544, March-2015, Available :http://www.jetir.org/papers/JETIR1503026.pdf

"Microcontroller Based Automatic College Bell With Monitoring System", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.2, Issue 3, page no. pp541-544, March-2015, Available at : http://www.jetir.org/papers/JETIR1503026.pdf