| 摘要 |
PURPOSE:To know whether temperature is rising, falling, or cotinues to be constant at a glance, by judging whether the temperature change is positive or negative for every temperature measuring period or for every average of several times, and lighting an indicator based on the result. CONSTITUTION:The output of a sensing oscillator circuit 1 is inputted in a counter 6 for a specified gate time. The output of the counter 6 is converted into temperature data by a data conversion circuit 8, and the reslut is inputted in a latch circuit 9. The output of the latch circuit 9 goes through a decoder 10 and a driver circuit 11, and the present temperature is displayed on a display device 15. A latch circuit 7 holds the measured data one time before the present. Magnitudes of the values in the latch circuit 6 and the latch circuit 7 are compared 12. Rising 16, constant 17, and falling 18 in temperature are displayed in this way. |
