這一實驗性的“餐館系統”是一個很典型商業應用，但并不復雜。歸根結底，就實現5個功能：1）增加一個新的預約（涉及數據庫中的一個insert操作），2）刪除一個被選中的預約（delete操作），3）在一個已有預約上記錄到達時間（提前預約的顧客來吃飯了）（對應update操作），4）更改分配給一個預約的餐桌（update操作），5）顯示指定日期內所有已有的預約（select操作）。從數據庫的角度來看，要實現這些功能不難。在我們的樣板系統中，在運行時主要通過以下對象的合作，實現上述功能。
上傳時間： 2018-11-02
上傳用戶：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.
標簽： Interference Analysis
上傳時間： 2020-05-27
上傳用戶：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.
標簽： Electronics Scourge ESD The of
上傳時間： 2020-06-05
上傳用戶：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.
標簽： Transmission Guidelines Electrical Line for
上傳時間： 2020-06-07
上傳用戶：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.
標簽： Engineering Voltage High
上傳時間： 2020-06-07
上傳用戶：shancjb
上傳文件為picc18編譯器。包含破解軟件在內。
標簽： C Compiler for pic18 mcus pro update
上傳時間： 2022-05-24
上傳用戶：
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
標簽： FreeModbus
上傳時間： 2022-05-31
上傳用戶：
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.
上傳時間： 2022-06-17
上傳用戶：
簡介QpenWrt是一個基于Linux的開源嵌入式操作系統，其在linux上進行深入的定制，加入大量網絡應用和管理界面，使其廣泛應用于路由器中。我們的項目是基于QpenWrt開發的，故其系統框架是相同的。二、OpenWrt編譯編譯流程a）安裝Linux系統）安裝編譯所需的各種工具；通過Subversion版本庫獲得源代碼；更新并安裝package feeds：創建一個默認配置以檢查編譯環境是否搭建好了；）用menuconfig來配置要加入固件中的軟件包；）最后開始編譯固件和清理工作。a）首先要安裝一個Linux系統，建議使用Ubuntu（以下以Ubuntu為例），安裝教程，可看官方wiki：http://wiki.ubuntu.orq.cn/%E9%A6%06%%A1%B5b）需安裝如下工具：·升級Ubuntu軟件包sudo apt-get update安裝所需的工具
上傳時間： 2022-06-20
上傳用戶：zhanglei193
請先安裝最新版的MDK527后再將此文件替換進去 MDK527官方下載地址：http://www.keil.com/files/eval/MDK527.EXE Tips:官網下載速度可能較慢，自行選擇高速的方式 MDK527官方更新說明 http://www.keil.com/update/whatsnew.asp?p=MDK&v=5.27 將UV4.exe 替換到安裝路徑.\Keil_v5\UV4\UV4.exe即可 替換前建議將原版UV4.exe備份 漢化說明 漢化工具：VS2017 社區版 漢化僅僅修改了String Table ,并未添加其他任何東西(本人也不會ε=ε=ε=(~￣▽￣)~) 理論上說，完全不影響使用，不會產生運行異常 如果你非要將此版本漢化替換到舊版本里，可能運行異常，自行測試 漢化時間：2019年3月24日 作者：蒙蒙Plus 漢化日志： 2019年3月24日 完成String Table 中英文替換 大量窗口內的文字未替換(重點是太麻煩) 估計不做漢化更新，畢竟我也不用漢化的
上傳時間： 2022-07-12
上傳用戶：xsr1983
