Temperature is a very important physical quantity which used in production and life .For the different applications, it is necessary to produce the proper system of measuring temperature.
The main theoretical base is theory of data collection . The temperature signals measured by 18B20 sensors transform to the voltage signals .The single chip transforms the voltage code to 16M code which is the basic of communication .I design the interface circuit between the single chip and PC .The temperature signals are received and described by VB and then displayed on the screen .All the signals can be Real-time memory in order to analyze them .
