Program 1 USES 12864 LCD module to display the measured data, which can display more groups of data, the font is large, can read clearly, but 12864 LCD module is expensive, complex wiring, so it is not used.Scheme 2 USES 1602 liquid crystal module to display the measured data, 1602 liquid crystal connection is simple and convenient, but also can meet the display needs, the price is far lower T 12864 liquid crystal.