| 摘要 |
PURPOSE:To display the changing direction together with the present value of data, by integrating the amount of variation of data within the specified past time with the present time as a starting point, and providing a judging circuit for the changing direction, which classifies the integrated value into specified stage. CONSTITUTION:A signal from a sensor 1 is converted into a digital signal by a converter 2 and displayed on a present value display part 31. Meanwhile, the signal is inputted to an operating circuit 4, where an integrated value V of the amount of change within a specified time period is computed. The output V of the operating circuit 4 is inputted to a judging circuit 5. Based on the relationship between the value V and a predetermined absolute value ¦P¦, the first code expressing V>+¦P¦, the second code expressing +¦P¦>=-¦P¦, and the third code expressing V<-¦P¦ are outputted to a changing direction display part 32. Therefore, not only the present value but also the changing direction is displayed on a data display device 30. Thus the trend of the data can be immediately judged. |
