虛擬串口
標(biāo)簽: 虛擬串口
上傳時(shí)間: 2013-12-20
上傳用戶:MATAIYES
51做串口實(shí)驗(yàn)的串口調(diào)試助手,不過(guò)是老版本,但是好用
標(biāo)簽: 2.2 串口 調(diào)試助手
上傳時(shí)間: 2014-02-18
上傳用戶:chukeey
并行端口大全_10332210.pdf
上傳時(shí)間: 2014-01-17
上傳用戶:王慶才
將單片機(jī)從串口收到的字符重新發(fā)送到串口
標(biāo)簽: 單片機(jī)串口 測(cè)試 上傳時(shí)間: 2013-10-28
上傳用戶:YKLMC
sscom30丁丁串口調(diào)試工具,可以自由設(shè)置波特率,速度,方向等等!學(xué)習(xí)串口控制的必備軟件, 非常方便簡(jiǎn)單易用
標(biāo)簽: sscom 30 串口調(diào)試工具
上傳時(shí)間: 2013-11-08
上傳用戶:coeus
只用電腦上的并口(打印機(jī)接口)不需任何外圍元件燒錄M8芯片的方法!! 只需要連接4根數(shù)據(jù)和1根地線一共5條線,無(wú)需任何電阻電容。 前提您的電腦上要有并口(打印機(jī)接口)。 并口與M8的鏈接,我這里用說(shuō)明和圖片示意兩種方式給大家描述 。 先鏈接并口25針里面的12腳和2腳。 25腳是地,接在M8的8腳或者22腳。如果是在線下載可以連接PCB上任意一點(diǎn)接地點(diǎn)。 10腳是MISO,接在M8的18腳(GandF的設(shè)計(jì)中大部分也在三線按鍵的接口里) 9腳是RES,接在M8的第1腳 7腳是MOSI, 接在M8的17腳(GandF的設(shè)計(jì)中大部分也在三線按鍵的接口里) 6腳是SCK,接在M8的19腳(GandF的設(shè)計(jì)中大部分也在三線按鍵的接口里)
上傳時(shí)間: 2013-10-29
上傳用戶:gai928943
本內(nèi)容介紹了IO模擬串口通訊的實(shí)現(xiàn)方法及實(shí)例分析
上傳時(shí)間: 2013-11-11
上傳用戶:jiwy
為解決當(dāng)前計(jì)算機(jī)串行通訊接口只有USB,難以滿足舊型號(hào)設(shè)備或某些單片機(jī)要求RS232通訊的問(wèn)題,設(shè)計(jì)出兩款RS232/USB電路。采用CH341A與MAX223集成電路芯片構(gòu)建標(biāo)準(zhǔn)9線RS232/USB通用接口轉(zhuǎn)換器,無(wú)需編程。采用CH341A與PIC16F877A構(gòu)建單片機(jī)與計(jì)算機(jī)之間的USB通訊電路,軟件遵循RS232通訊協(xié)議,硬件進(jìn)行電平轉(zhuǎn)換。實(shí)際使用表明,這兩款產(chǎn)品與計(jì)算機(jī)端Windows 操作系統(tǒng)下的串口應(yīng)用程序完全兼容,且通訊過(guò)程中無(wú)握手失敗現(xiàn)象。 Abstract: To solve the problem that current computer serial communication only with USB interface can not satisfy with the old type equipments or MCU to communicate with RS232, two kinds of RS232/USB circuit were designed.CH341A and MAX223 integrated circuit chips were used to create a standard 9-line RS232/USB universal interface convertor without programme. CH341A and PIC16F877A chips were adopted to build the USB communication circuit between computers and MCU. The software follows RS232 communication protocol, and the hardware converts electrical levels. Actual practices indicate that the two manufactures are compatible with serial application program of Windows operation system completely,and get avoid of handshake lost.
上傳時(shí)間: 2013-11-03
上傳用戶:siying
P0端口由鎖存器、輸入緩沖器、切換開關(guān)、一個(gè)與非門、一個(gè)與門及場(chǎng)效應(yīng)管驅(qū)動(dòng)電路構(gòu)成。再看圖的右邊,標(biāo)號(hào) 為P0.X引腳的圖標(biāo),也就是說(shuō)P0.X引腳可以是P0.0到P0.7的任何一位,即在P0口有8個(gè)與上圖相同的電路組成。
上傳時(shí)間: 2014-01-13
上傳用戶:fandeshun
單片機(jī)作為一種微型計(jì)算機(jī),其內(nèi)部具有一定的存儲(chǔ)單元(8031除外),但由于其內(nèi)部存儲(chǔ)單元及端口有限,很多情況下難以滿足實(shí)際需求。為此介紹一種新的擴(kuò)展方法,將數(shù)據(jù)線與地址線合并使用,通過(guò)軟件控制的方法實(shí)現(xiàn)數(shù)據(jù)線與地址線功能的分時(shí)轉(zhuǎn)換,數(shù)據(jù)線不僅用于傳送數(shù)據(jù)信號(hào),還可作為地址線、控制線,用于傳送地址信號(hào)和控制信號(hào),從而實(shí)現(xiàn)單片機(jī)與存儲(chǔ)器件的有效連接。以單片機(jī)片外256KB數(shù)據(jù)存儲(chǔ)空間的擴(kuò)展為例,通過(guò)該擴(kuò)展方法,僅用10個(gè)I/O端口便可實(shí)現(xiàn),與傳統(tǒng)的擴(kuò)展方法相比,可節(jié)約8個(gè)I/O端口。 Abstract: As a micro-computer,the SCM internal memory has a certain units(except8031),but because of its internal storage units and the ports are limited,in many cases it can not meet the actual demand.So we introduced a new extension method,the data line and address lines combined through software-controlled approach to realize the time-conversion functions of data lines and address lines,so the data lines not only transmited data signals,but also served as address lines and control lines to transmit address signals and control signals,in order to achieve an effective connection of microcontroller and memory chips.Take microcontroller chip with256KB of data storage space expansion as example,through this extension method,with only10I/O ports it was achieved,compared with the traditional extension methods,this method saves8I/O ports.
標(biāo)簽: 單片機(jī) P0口 數(shù)據(jù)存儲(chǔ)器 擴(kuò)展
上傳時(shí)間: 2014-12-26
上傳用戶:adada
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