javascript中文教程 <INPUT TYPE="button" NAME="objectName" VALUE="buttonText" [onclick="handlerText"]> NAME specifies the name of the button object as a property of the enclosing form object and can be accessed using the name property. VALUE specifies the label to display on the button face and can be accessed using the value property.
標(biāo)簽： javascript buttonText objectName onclick
上傳時間： 2014-01-25
上傳用戶：aix008
</div> <br> <input type="button" value="閃爍" onclick="highLight($( demo ))" /> <input type="button" value="停止" onclick="stopTwinkle($( demo ))" /> <br> <br> <div id="demo2" class="box"> Box II </div> <br> <input type="button" value="閃爍" onclick="highLight($( demo2 ))" /> <input type="button" value="停止" onclick="stopTwinkle($( demo2 ))" />
標(biāo)簽： highLight lt gt onclick
上傳時間： 2013-12-07
上傳用戶：蟲蟲蟲蟲蟲蟲
This document provides practical, common guidelines for incorporating PCI Express interconnect layouts onto Printed Circuit Boards (PCB) ranging from 4-layer desktop baseboard designs to 10- layer or more server baseboard designs. Guidelines and constraints in this document are intended for use on both baseboard and add-in card PCB designs. This includes interconnects between PCI Express devices located on the same baseboard (chip-to-chip routing) and interconnects between a PCI Express device located “down” on the baseboard and a device located “up” on an add-in card attached through a connector. This document is intended to cover all major components of the physical interconnect including design guidelines for the PCB traces, vias and AC coupling capacitors, as well as add-in card edge-finger and connector considerations. The intent of the guidelines and examples is to help ensure that good high-speed signal design practices are used and that the timing/jitter and loss/attenuation budgets can also be met from end-to-end across the PCI Express interconnect. However, while general physical guidelines and suggestions are given, they may not necessarily guarantee adequate performance of the interconnect for all layouts and implementations. Therefore, designers should consider modeling and simulation of the interconnect in order to ensure compliance to all applicable specifications. The document is composed of two main sections. The first section provides an overview of general topology and interconnect guidelines. The second section concentrates on physical layout constraints where bulleted items at the beginning of a topic highlight important constraints, while the narrative that follows offers additional insight.
標(biāo)簽： pci PCB 設(shè)計規(guī)范
上傳時間： 2013-10-15
上傳用戶：busterman
本文檔介紹如何使用PIC單片機(jī)編程器開發(fā)工具在目標(biāo)電路板上仿真和調(diào)試固件。本手冊的內(nèi)容編排如下 第一章 PIC單片機(jī)編程器概述 第二章 入門 第三章 PIC編程器和ICSP 第四章 PICKIT DEBUG EXPRESS 第五章 疑難解答 ......................
標(biāo)簽： PICkit 單片機(jī)編程器 用戶
上傳時間： 2013-10-19
上傳用戶：sardinescn
遙控器使用方便, 功能多, 目前已廣泛應(yīng)用在電視機(jī)、、、空調(diào)等各種家用電器中, 且價格便宜, 市上非常容易買到。如果能將遙控器上許多的按鍵解碼出來, 用作單片機(jī)系統(tǒng)的輸入, 則解決了常規(guī)矩陣鍵盤線路板大、布線復(fù)雜、占用口過多的弊病。而且通過使用遙控器, 操作時可實(shí)現(xiàn)人與設(shè)備的分離, 從而更加方便使用。下面以下編碼芯片的遙控器為例,談?wù)勅绾斡贸Ｓ玫南到y(tǒng)單片機(jī)進(jìn)行遙控的解碼。
上傳時間： 2013-10-15
上傳用戶：gxmm
任務(wù)1 廣告燈電路的制作 任務(wù)2 音頻控制電路的制作 任務(wù)3 繼電器控制電路的制作 任務(wù)4 程序調(diào)試 任務(wù)5 程序燒寫
上傳時間： 2013-10-29
上傳用戶：ZOULIN58
MSP430和ARM7是兩個完全不同體系構(gòu)架的處理器，因此雖一些在應(yīng)用上具有共性的問題做個簡要比較。 目前在應(yīng)用中比較普遍關(guān)心的是 速度和功耗、 應(yīng)用范圍、內(nèi)部資源、硬件設(shè)計、設(shè)計周期、成本考慮
標(biāo)簽： ARM7 430 MSP 單片機(jī)
上傳時間： 2013-10-22
上傳用戶：wenwiang
針對目前使用的RS232接口數(shù)字化B超鍵盤存在PC主機(jī)啟動時不能設(shè)置BIOS，提出一種PS2鍵盤的設(shè)計方法。基于W78E052D單片機(jī)，采用8通道串行A/D轉(zhuǎn)換器設(shè)計了8個TGC電位器信息采集電路，電位器位置信息以鍵盤掃描碼序列形式發(fā)送，正交編碼器信號通過XC9536XL轉(zhuǎn)換為單片機(jī)可接收的中斷信號，軟件接收到中斷信息后等效處理成按鍵。結(jié)果表明，在滿足開機(jī)可設(shè)置BIOS同時，又可實(shí)現(xiàn)超聲特有功能，不需要專門設(shè)計驅(qū)動程序，接口簡單，成本低。 Abstract: Aiming at the problem of the digital ultrasonic diagnostic imaging system keyboard with RS232 interface currently used couldn?蒺t set the BIOS when the PC boot， this paper proposed a design method of PS2 keyboards. Based on W78E052D microcontroller，designed eight TGC potentiometers information acquisition circuit with 8-channel serial A/D converter， potentiometer position information sent out with keyboard scan code sequentially.The control circuit based on XC9536 CPLD is used for converting the mechanical actions of the encoders into the signals that can be identified by the MCU， software received interrupt information and equivalently treatmented as key. The results show that the BIOS can be set to meet the boot， ultrasound specific functionality can be achieved at the same time， it does not require specially designed driver，the interface is simple and low cost.
標(biāo)簽： 單片機(jī) B超 數(shù)字化 鍵盤設(shè)計
上傳時間： 2013-10-10
上傳用戶：asdfasdfd
在航電系統(tǒng)維護(hù)過程中，為解決定位故障的效率和降低維修成本等問題，提出了基于ICD（Interface Control Document，接口控制文件）的1553B總線的信息監(jiān)控系統(tǒng)模型。該系統(tǒng)運(yùn)用數(shù)據(jù)采集卡對總線中傳輸?shù)男盘栍袩o失真、偏差等電氣特性進(jìn)行檢測，并使用1553B通訊卡通過測控軟件LabWindows/CVI編程與ICD數(shù)據(jù)庫的動態(tài)鏈接，實(shí)現(xiàn)總線信息的解析和故障的判斷。與傳統(tǒng)的維護(hù)過程相比，這種模型能夠從信號的電氣特性以及信息的解析等全方位的去檢測判斷故障的來源，并且能夠廣泛在其他1553B總線系統(tǒng)內(nèi)擴(kuò)展應(yīng)用。驗(yàn)證表明該監(jiān)控系統(tǒng)可以對總線信息進(jìn)行快速有效地監(jiān)測分析，能滿足應(yīng)用需求。 Abstract: In the process of avionics system maintenance， to solve the problems such as improving the efficiency of fast orientation to troubles and reducing maintenance cost， system of 1553B bus information monitor model based on ICD was proposed. The system observed whether the data which transmitted on the bus appear distortion and deviation by using data acquisition card. And using 1553B communication card programming of the measure software LabWindows/CVI and the dynamic linking of ICD database， message analysis and fault estimation could be realized. Compared with traditional maintenance， this model can all-dimensionally detect and analyze the source of faults from both electrical characteristics of the signal and message analysis， and it can be widely applied in the other 1553B system. Experiment shown that this monitor system can effectively detect and analyze the bus message and can meet the application requirements.
標(biāo)簽： 1553B 總線 信息監(jiān)控
上傳時間： 2013-11-23
上傳用戶：18752787361
第一章：MCS-51系列單片機(jī)的存儲結(jié)構(gòu)(4學(xué)時) ① 掌握內(nèi)部數(shù)據(jù)寄存器RAM的結(jié)構(gòu)、用途和特點(diǎn); ② 程序存儲器ROM的結(jié)構(gòu)特點(diǎn)，編程中應(yīng)注意的問題; ③ 片內(nèi)、外程序存儲器的確定方法。 .. 第二章：MCS-51單片機(jī)指令系統(tǒng)及時序(4學(xué)時) ① 111條指令的功能分類; ② 指令的尋址方式; ③ 偽指令及匯編語言源程序的格式; ④ 與指令的相關(guān)時序。 第三章：MCS-51單片機(jī)內(nèi)部模塊的功能介紹(8學(xué)時) ① 內(nèi)部并行I/O端口的結(jié)構(gòu)特點(diǎn)、使用中的注意事項(xiàng); ② 定時/計數(shù)器的2種工作方式、4種計數(shù)模式; ③ 串行接口的4種工作模式的設(shè)定及波特率的計算; ④ 中斷系統(tǒng)的結(jié)構(gòu)、中斷響應(yīng)的過程和編程方法。 .. 第四章：MCS-51單片機(jī)系統(tǒng)的擴(kuò)展及應(yīng)用(8學(xué)時); ① 系統(tǒng)擴(kuò)展的幾種方法; ② 外部程序、數(shù)據(jù)存儲器的擴(kuò)展; ③ A/D、D/A轉(zhuǎn)換器與單片機(jī)的接口電路及編程方法; ④ 鍵盤掃描/動態(tài)顯示接口電路; ⑤ 單片機(jī)的監(jiān)控電路等。
上傳時間： 2013-10-17
上傳用戶：熊少鋒
蟲蟲下載站版權(quán)所有 京ICP備2021023401號-1
