很久以来,人们一直是用手动或半自动电位差计来对电压进行精密测量,但近十几年来,由于科学技术的飞速发展,对测量技术也就相应提出了更高的要求.这不仅在于高的准确度,更重要的还在于往往要求有高的测量速度,这显然就不是手动和半自动电位差计所能完成的了.数字电压表,由于它是一种电子化的测量仪表,不仅能出色地完成电压的快速精密测量,而且还以它具有 For a long time people have been using manual or semi-automatic potentiometer for voltage measurement precision, but in recent years, due to the rapid development of science and technology, measurement technology also put forward higher requirements accordingly, not only in the high Of the accuracy, but also more importantly, often require a high measurement speed, which is obviously not manual and semi-automatic potentiometer can be done.Digital voltmeter, because it is an electronic measuring instruments, not only can Exceptionally fast and precise voltage measurement done, but also with it