LCD BASED DIGITAL ALARM CLOCK WITH DIGITAL THERMOMETER

Abstract

Celsius scale thermometer displays the ambient temperature through a LCD display. It consists of two sections. One is that which senses the temperature. This is a temperature sensor LM 35. The other section converts the temperature value into a suitable number in Celsius scale which is done by the in built ADC of the microcontroller. The LM 35 IC generates a 10mV variation to its output voltage for every degree Celsius change in temperature.The Output of the temperature sensor is analog in nature so we need an analog to digital convertor for converting the analog input to its equivalent binary output. This project incorporates the functionality of a digital clock and a digital thermometer. The digital clock works in 12 hour mode and is configured by programming the ATMEGA 328 microcontroller.