The data acquisition system reads the given analog quantities from the various sensors through an DAC and displays it in a LCD display. The Microcontroller also processes the input data and controls the various external devices such as relays that are activates when certain reading exceeds the given limit in the program itself. The controller communicates the PC via the serial port and gives the data in the hyper terminal a small modification can be done
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i can provide u a USB Digital Temperature sensor which senses the outside temperature and displays it in the [url removed, login to view] control options can be done thru PC.