为改善门诊叫号秩序本人研制了一台既可使患者听到声音又有醒目数字显示的“门诊排号器”。由于使用了辉光数码管，从而省掉了复杂的编、译码线路。既使数码呈桔红色、美观大方；又使线路简捷，便于使用、维修。基本原理和结构设计如下：本排号器主要是辉光数码管与拨盘开关及 In order to improve the ordering of outpatients, I developed a “patient clinic numbering device” that allows the patient to hear sounds and have eye-catching digital displays. Thanks to the use of the Glow digital tube, complicated coding and decoding lines are eliminated. Even if the digital is orange, beautiful and generous; also make the line simple, easy to use, maintenance. The basic principle and structure design are as follows: This serial number device is mainly a glow digital tube and dial switch and