| 摘要 |
PURPOSE:To make easier the reading of display by a method wherein 1 digit is added or subtracted according to the comparison between the specified value and the analog amount obtained from the digital memory via a DA converter subtracted by the value of an analog input. CONSTITUTION:A device is allowed to be checked repeatedly by means of machine time at an interval od 10mus, for instance, to obtain the difference between the analog amount and input 1 obtained from the digital memory 2 through a DA converter 3 at each checking. When a difference exceeding the specified value (1 digital amount) is detected by a detector 5, 1 digit is added to the memory 2 by the adding device 6. In addition, when a difference lower than the specified value is detected by a detector 7, 1 digit is subtracted from the memory 2 by means of a subtracting device 8. The contents of the memory 2 are digitally displayed against the variation of the analog amount by less than 1 digit, so that the reading of display can be readily made. |
