此程序为组合架1U而编写.采用单排按键控制双读卡机.功能完善,带USB.LED指示,有单独A/B切换功能.解决了1U按键不足的问题.-This combination of procedures has been prepared 1U rack. Keys to control the use of single-row dual-card reader. Functions, USB.LED with instructions, a separate A/B switch features. Solved the problem of insufficient 1U button.