电路如图1所示,V_1、V_2和V_3分别为三个输入电压,其总和值应在0.2～4.5V之间。本文讨论如何通过三片ICL7107及其附加电路和元件分别显示V_1、V_2和V_3在其总和值V_1+V_2+V_3中所占的百分数S_1,即V S_1=V_i/(V_1+V_2+V_3×100(％)),i=1,2,3 (1)如图1所示,V_1、V_2和V_3,分别通过1Mfl电阻和0.01.F电容滤波后加到ICL7107的inHI端(31脚), Circuit shown in Figure 1, V_1, V_2 and V_3 were three input voltages, the sum should be between 0.2 ~ 4.5V. This article discusses how to display the percentages of V_1, V_2, and V_3 in the total value of V_1 + V_2 + V_3 by using three ICL7107s and their additional circuits and components, namely, S_1, V_S_1 = V_i / (V_1 + V_2 + V_3 × 100 (%)), I = 1,2,3 (1) As shown in Fig. 1, V_1, V_2 and V_3 are respectively filtered by 1Mfl resistor and 0.01μF capacitor and added to the inHI terminal of ICL7107 (31 pins)