随着机电一体化的发展,各种状态的电子延时控制器和电子计数器得到了广泛应用。然而,传统的延时控制器精确度低、延时范围小、一致性差、工作模式单一;而计数器则大多数还是机械式或电磁式的,计数速度低,而且很难与计算机系统联机使用。上述 With the development of mechatronics, various states of electronic delay controllers and electronic counters have been widely used. However, the traditional delay controller has low accuracy, small delay range, poor consistency and single mode of operation. However, most of the counters are mechanical or electromagnetic, have low counting speed, and are difficult to use online with the computer system. Above