摘要: http://articles.mopar1973man.com/general-cummins/34-engine-system/81-ccd-data-busCCD (Chrysler Collision Detection) Data BusDescriptionThe Chrysler Collision Detection (also referred to as CCD or C2D ) data bus system is a multiplex system used for vehicle communications on many Chrysler Corporation 阅读全文
posted @ 2014-02-26 23:56 IAmAProgrammer 阅读(25155) 评论(0) 推荐(0) 编辑
摘要: http://www.baiheee.com/Documents/081207/081207184434.htmhttp://www.baiheee.com/Documents/081207/081207184704.htm当要显示绿灯(LED1)亮时,I/O口可置为低电平。此时红灯(LED2)反向偏置,无电流流过,不会亮。当要显示红灯(LED2)亮时,I/O口可置为高电平。此时绿灯(LED1)反向偏置,无电流流过,不会亮。若要指示灯不亮,可将I/O口置为高阻态,此时两个发光管均无电流流过,也不会亮。若要显示橙灯亮时,此时LED1、LED2要一起亮,则可以让I/O口在某一固定频率下以50%的占 阅读全文
posted @ 2014-02-26 01:09 IAmAProgrammer 阅读(7532) 评论(0) 推荐(0) 编辑