<％@ LANGUAGE="VBSCRIPT" ％> <!--#include file="conn.asp"--> <％ set rs=server.createobject("adodb.recordset") sqltext="select * from RegUser where UserId= " & request.form("uid") & " " rs.open sqltext,co
標(biāo)簽： lt LANGUAGE VBSCRIPT include
上傳時間： 2013-12-08
上傳用戶：yuanyuan123
基于RS-485的單片機(jī)多機(jī)通信控制系統(tǒng)協(xié)議的實(shí)現(xiàn)方案
標(biāo)簽： 485 RS 單片機(jī) 協(xié)議
上傳時間： 2013-11-29
上傳用戶：huyiming139
USB source code of Vxworks 5.6. It has device and the host stack.
標(biāo)簽： Vxworks source device stack
上傳時間： 2014-01-27
上傳用戶：dapangxie
The purpose of this application note is to describe the main elements of an RS-422 and RS-485 system. This application note attempts to cover enough technical details so that the system designer will have considered all the important aspects in his data system design. Since both RS-422 and RS- 485 are data transmission systems that use balanced differential signals, it is appropriate to discuss both systems in the same application note. Throughout this application note the generic terms of RS-422 and RS-485 will be used to represent the EIA/TIA-422 and EIA/TIA-485 Standards.
標(biāo)簽： application describe elements purpose
上傳時間： 2013-12-29
上傳用戶：sxdtlqqjl
計算機(jī)通信與rs-232接口實(shí)用指南\計算機(jī)通信與rs-232接口實(shí)用指南
上傳時間： 2013-11-26
上傳用戶：qw12
什么是RS-232-C接口？采用RS-232-C接口有何特點(diǎn)？傳輸電纜長度如何考慮？
上傳時間： 2013-12-30
上傳用戶：遠(yuǎn)遠(yuǎn)ssad
This document provides guidelines for integrating a discrete high speed USB host controller onto a fourlayer desktop motherboard. The material covered can be broken into three main categories: Board design guidelines, EMI/ESD guidelines and front panel USB guidelines. Section 1.1 Background provides an explanation of the routing experiments and testing performed to validate the feasibility of 480 Megabits per second on an actual motherboard. Section 7 contains a design checklist that lists each design recommendation described in this document. High speed USB operation is described in the USB 2.0 Specification (http://www.usb.org/developers/docs.html).
標(biāo)簽： integrating controller guidelines document
上傳時間： 2013-11-27
上傳用戶：電子世界
This document provides guidelines for integrating a discrete high speed USB host controller onto a fourlayer desktop motherboard. The material covered can be broken into three main categories: Board design guidelines, EMI/ESD guidelines and front panel USB guidelines. Section 1.1 Background provides an explanation of the routing experiments and testing performed to validate the feasibility of 480 Megabits per second on an actual motherboard. Section 7 contains a design checklist that lists each design recommendation described in this document. High speed USB operation is described in the USB 2.0 Specification (http://www.usb.org/developers/docs.html).
標(biāo)簽： integrating controller guidelines document
上傳時間： 2015-11-18
上傳用戶：xhz1993
AT91RM9200的USB host和USB device的代碼ADS1.2. USB-Device測試程序: 因?yàn)槌绦蜻\(yùn)行在SDRAM中，所以要先初始化SDRAM（可用basic boot程序初始，之后不能復(fù)位或斷電），再運(yùn)行此程序，程序運(yùn)行后連接USB端口，計算機(jī)會提示檢測到新硬件，安裝硬件驅(qū)動程序atmusb6119.inf 后計算機(jī)會把USB端口虛擬為一個串行的端口使用
標(biāo)簽： USB-Device USB device SDRAM
上傳時間： 2013-12-15
上傳用戶：cazjing
st7920 128*64測試程序sbit RS = P1^0 sbit RW = P1^1 sbit E = P1^2
上傳時間： 2014-01-11
上傳用戶：lanjisu111
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