Abstract：An intelligent constant temperature control and display circuit is realized by using 89C2051 single chip microcomputer
and DS18B20 digital temperature sensor. The software design of constant temperature controller is based on OrCAD/Capture. The
hardware include the 89C2051, LED display circuit and power supply module. In the low temperature environment, the controller
can start the electric heater, controlling the temperature in the range of 28 to 34 degrees Celsius, and displays the result on the front
panel in real time.
2017, Vol. 1 
