四线触摸显现屏包罗两个阻性层。此中一层在屏幕的摆布边缘各有一条垂直总线，另外一层在屏幕的底部和顶部各有一条程度总线，见图4。为了在X轴标的目的停止丈量，将左边总线偏置为0V，右边总线偏置👍为VREF。将顶部或底部总线毗连到ADC，当顶层和底层相打仗时便可作一次丈量。

　　方便(bian)在Y轴(zhou)标(biao)识目地暂停仗(zhang)(zhang)(zhang)量，将(jiang)壳体(ti)数(shu)据(ju)(ju)系(xi)(xi)(xi)统(tong)(tong)数(shu)据(ju)(ju)系(xi)(xi)(xi)统(tong)(tong)串(chuan)口(kou)通(tong)(tong)信(xin)(xin)(xin)偏(pian)置(zhi)(zhi)为(wei)VREF，底下数(shu)据(ju)(ju)系(xi)(๊xi)(xi)统(tong)(tong)数(shu)据(ju)(ju)系(xi)(xi)(xi)统(tong)(tong)串(chuan)口(kou)通(tong)(tong)信(xin)(xin)(xin)偏(pian)置(zhi)(zhi)为(wei)0V。将(jiang)ADC转(zhuan)换端(duan)接(jie)(jie)靠左边数(shu)据(ju)(ju)系(xi)(xi)(xi)统(tong)(tong)数(shu)据(ju)(ju)系(xi)(xi)(xi)统(tong)(tong)串(chuan)口(kou)通(tong)(tong)信(xin)(xin)(xin)或左上(shang)方数(shu)据(ju)(ju)系(xi)(xi)(xi)统(tong)(tong)数(shu)据(ju)(ju)系(xi)(xi)(xi)统(tong)(tong)串(chuan)口(kou)通(tong)(tong)信(xin)(xin)(xin)，当层顶与表层相干(gan)仗(zhang)(zhang)(zhang)时便(bian)可对输入功(gong)率(lv)暂停仗(zhang)(zhang)(zhang)量。图5凸显了四线手触凸显屏在三层相干(gan)仗(zhang)(zhang)(zhang)时的简易模(mo)板。对四线手触凸显屏，最远大理想的毗(pi)连策略是(shi)将(jiang)偏(pian)置(zhi)(zhi)为(wei)VREF的数(shu)据(ju)(𝐆ju)系(xi)(xi)(xi)统(tong)(tong)数(shu)据(ju)(ju)系(xi)(xi)(xi)统(tong)(tong)串(chuan)口(kou)通(tong)(tong)信(xin)(xin)(xin)接(jie)(jie)ADC的正考虑转(zhuan)换端(duan)，并将(jiang)设(she)为(wei)为(wei)0V的数(shu)据(ju)(ju)系(xi)(xi)(xi)统(tong)(tong)数(shu)据(ju)(ju)系(xi)(xi)(xi)统(tong)(tong)串(chuan)口(kou)通(tong)(tong)信(xin)(xin)(xin)接(jie)(jie)ADC的负(fu)考虑转(zhuan)换端(duan)。