这一实验性的“餐馆系统”是一个很典型商业应用，但并不复杂。归根结底，就实现5个功能：1）增加一个新的预约（涉及数据库中的一个insert操作），2）删除一个被选中的预约（delete操作），3）在一个已有预约上记录到达时间（提前预约的顾客来吃饭了）（对应UPDATE操作），4）更改分配给一个预约的餐桌（UPDATE操作），5）显示指定日期内所有已有的预约（select操作）。从数据库的角度来看，要实现这些功能不难。在我们的样板系统中，在运行时主要通过以下对象的合作，实现上述功能。
上传时间： 2018-11-02
上传用户：jack110
We were on the lookout for ice. I was in a 32 foot sailing yacht with writer and explorer Tristan Gooley, undertaking a double-handed sail from Scotland through the Faroes up to 66 33 45.7 N and the midnight sun. Now sailing out of the Arctic Circle we were approaching Iceland from the north, heading for the Denmark Straits, where ice flowed south. The Admiralty Pilot warned of bergs but the ice charts we had sailed with were over a week old. We needed an UPDATE.
标签： Interference Analysis
上传时间： 2020-05-27
上传用户：shancjb
This book on electrostatic discharge phenomena is essentially a translation and UPDATE ofa Swedish edition from 1992. The book is intended for people working with electronic circuits and equipments, in application and development. All personnel should be aware of the ESD-hazards, especially those responsible for quality. ESD-prevention is a part of TQM (Total Quality Management). The book is also usable for courses on the subject.
标签： Electronics Scourge ESD The of
上传时间： 2020-06-05
上传用户：shancjb
Since the original publication of Manual 74 in 1991, and the preceding “Guidelines for Transmission Line Structural Loading” in 1984, the understanding of structural loadings on transmission line structures has broadened signifi cantly. However, improvements in computational capa- bility have enabled the transmission line engineer to more easily deter- mine structural loadings without properly understanding the parameters that affect these loads. Many seasoned professionals have expressed concern for the apparent lack of recent information on the topic of struc- tural loadings as new engineers enter this industry. The Committee on Electrical Transmission Structures is charged with the responsibility to report, evaluate, and provide loading requirements of transmission struc- tures. This task committee was therefore formed to UPDATE and revise the 1991 manual.
标签： Transmission Guidelines Electrical Line for
上传时间： 2020-06-07
上传用户：shancjb
The first edition as well as its forerunner of Kuffel and Abdullah published in 1970 and their translations into Japanese and Chinese languages have enjoyed wide international acceptance as basic textbooks in teaching senior under- graduate and postgraduate courses in High-Voltage Engineering. Both texts have also been extensively used by practising engineers engaged in the design and operation of high-voltage equipment. Over the years the authors have received numerous comments from the text’s users with helpful suggestions for improvements. These have been incorporated in the present edition. Major revisions and expansion of several chapters have been made to UPDATE the continued progress and developments in high-voltage engineering over the past two decades.
标签： Engineering Voltage High
上传时间： 2020-06-07
上传用户：shancjb
上传文件为picc18编译器。包含破解软件在内。
标签： C Compiler for pic18 mcus pro UPDATE
上传时间： 2022-05-24
上传用户：
If register should be written or read.This value is passed to the calback functions which support either reading or writing register values. Writing means that the application registers should be UPDATEd and reading means that the modbus protocol stack needs to know the current register values.See also: eMBRegHoldingCB(), eMBRegCoilsCB(), eMBRegDiscreteCB() and eMBReglnputCB().Enumeration values: MB_REG_READ Read register values and pass to protocol stack.MB_REG_WRITE UPDATE register values.Note: Note all ports implement this function.A port which wants to get an callback must define the macro MB_PORT_HAS_CLOSE to 1.Returns: If the resources where released it return eMBErrorCode:: MB_ENOERR. If the protocol stack is not in the disabled state it returns eMBErrorCode:: MB_EILLSTATE.Examples: LINUX/demo.c, MCF5235TCP/demo.c, STR71XTCP/demo.c, WIN32/demo. cpp, and WIN32TCP/demo. cpp.his function disables processing of Modbus frames.Returns: If the protocol stack has been disabled
标签： FreeModbus
上传时间： 2022-05-31
上传用户：
RX-8801 SA Features built-in 32.768 kHz DTCXO, High Stability Supports l'C-Bus's high speed mode (400 kHz)Alarm interrupt function for day, date, hour, and minute settings Fixed-cycle timer interrupt function Time UPDATE interrupt function32.768 kHz output with OE function Auto correction of leap years Wide interface voltage range: 2.2 V to 5.5 V Wide time-keeping voltage range:1.8 V to 5.5 V Low current consumption: 0.84A/3V (Typ.)is an IC bus interface-compliant real-time clock which includes a 32.768 kHz DTCXO In addition to providing a calendar (year, month, date, day, hour, minute, second) function and a clock counter function, this module provides an abundance of other functions including an alarm function, fixed-cycle timer unction, time UPDATE interrupt function, and 32.768 kHz output function.The devices in this module are fabricated via a C-MOS process for low current consumption, which enables ong-term battery back-up.
上传时间： 2022-06-17
上传用户：
简介QpenWrt是一个基于Linux的开源嵌入式操作系统，其在linux上进行深入的定制，加入大量网络应用和管理界面，使其广泛应用于路由器中。我们的项目是基于QpenWrt开发的，故其系统框架是相同的。二、OpenWrt编译编译流程a）安装Linux系统）安装编译所需的各种工具；通过Subversion版本库获得源代码；更新并安装package feeds：创建一个默认配置以检查编译环境是否搭建好了；）用menuconfig来配置要加入固件中的软件包；）最后开始编译固件和清理工作。a）首先要安装一个Linux系统，建议使用Ubuntu（以下以Ubuntu为例），安装教程，可看官方wiki：http://wiki.ubuntu.orq.cn/%E9%A6%06%%A1%B5b）需安装如下工具：·升级Ubuntu软件包sudo apt-get UPDATE安装所需的工具
上传时间： 2022-06-20
上传用户：zhanglei193
请先安装最新版的MDK527后再将此文件替换进去 MDK527官方下载地址：http://www.keil.com/files/eval/MDK527.EXE Tips:官网下载速度可能较慢，自行选择高速的方式 MDK527官方更新说明 http://www.keil.com/UPDATE/whatsnew.asp?p=MDK&v=5.27 将UV4.exe 替换到安装路径.\Keil_v5\UV4\UV4.exe即可 替换前建议将原版UV4.exe备份 汉化说明 汉化工具：VS2017 社区版 汉化仅仅修改了String Table ,并未添加其他任何东西(本人也不会ε=ε=ε=(~￣▽￣)~) 理论上说，完全不影响使用，不会产生运行异常 如果你非要将此版本汉化替换到旧版本里，可能运行异常，自行测试 汉化时间：2019年3月24日 作者：蒙蒙Plus 汉化日志： 2019年3月24日 完成String Table 中英文替换 大量窗口内的文字未替换(重点是太麻烦) 估计不做汉化更新，毕竟我也不用汉化的
上传时间： 2022-07-12
上传用户：xsr1983
