1305时钟芯片驱动，用于弹片机、dsp、msp开发时的计时。
上传时间： 2016-01-17
上传用户：hakim
W78E58与1305液晶模块的接口程序
上传时间： 2013-12-22
上传用户：refent
电气控制柜元件安装接线配线的规范(图解)
上传时间： 2013-06-02
上传用户：eeworm
Under the Energy Independence and Security Act of 2007 (EISA), the National Institute of Standards and Technology (NIST) was assigned “primary responsibility to coordinate development of a framework that includes protocols and model standards for information management to achieve interoperability of Smart Grid devices and systems…” [EISA Section 1305]. 35 This responsibility comes at a time when the electric power grid and electric power industry are undergoing the most dramatic transformation in many decades. Very significant investments are being made by industry and the federal government to modernize the power grid. To realize the full benefits of these investments—and the continued investments forecast for the coming decades—there is a continued need to establish effective smart grid 36 standards and protocols for interoperability.
标签： Framework Roadmap NIST and
上传时间： 2020-06-06
上传用户：shancjb
网络时间协议NTP（Network Time Protocol）是由RFC 1305定义的时间同步协议，用来在分布式时间服务器和客户端之间进行时间同步.NTP采用UDP进行数据传输，端口号为123，可提供了1~50 ms的精确度，精确度取决于同步源和网络路径等特性（简单网络时间协议SNTP（Simple Network Time Pro-tocol）是一个简化了的NTP服务器和NTP客户端策略，SNTP在协议实现上没有什么更改，在最近也不会有什么变动。访问范例与UDP/TIME协议是一致的，实际上，SNTP应该更容易适用于使用个人计算机的UDP/TIME客户，而且SNTP也被设计在一个专门的服务器（包括一台集成的无线电时钟）上操作.SNTP主要通过同步算法来交换时间服务器和客户端的时间截，从而估算出数据包在网络上的往返延迟，进而独立地估算系统的时钟偏差.SNTP报文格式如图1所示。
上传时间： 2022-06-22
上传用户：20125101110
