VxWorks系统概念妙喻
VxWorks系统概念妙喻技术分类: 嵌入式系统 | 2008-03-20 来源:单片机及嵌入式系统应用 | 作者:林先贤 宋淼 当前嵌入式系统已无所不在,应用于各行各业。在嵌入式系统中,有一类很重要的成员,即实时嵌入式系统,其中,WindRiver公司的VxWorks是目前软件工程师采用最多的,用于开发实时嵌入式系统的商用实时嵌入式操作系统,以其可靠性及强大的工具支持著称。很多程序开发人员由Windows编程转向嵌入式编程时感到困难,因为在Windows的API函数中有不少操作系统内核机制都进行了封装(如信号量、消息等),往往不必了解这些概念,而优秀的
ADC的接地
by Walt KesterQ. I’ve read your data sheets and application notes and also attendedyour seminars, but I’m still confused about how to deal with analog(AGND) and digital (DGND) ground pins on an ADC. Your datasheets usually say to tie the analog and digital grounds together atthe device, but I don’t want the ADC to become my system’s starground point. What do I do?A. First of all, don’t feel bad that you are confused about what todo with your analog and digital grounds. So are lots of folks!