智能LED點(diǎn)陣顯示屏設(shè)計(jì)（上位機(jī)）

電氣工程論文編號(hào):DQ098   論文字?jǐn)?shù):10384,頁(yè)數(shù):25

目 錄
摘要 Ⅰ
Abstract Ⅱ
1 緒論 1
1.1 研究課題的提出 1
1.2 LED的發(fā)展 1
1.3 LED的特點(diǎn) 2
1.4 LED的價(jià)值 3
1.5 LED點(diǎn)陣顯示的出現(xiàn) 3
2 系統(tǒng)總體設(shè)計(jì) 5
2.1 系統(tǒng)總體框圖 5
2.2 方案比較 5
2.2.1 顯示部分 5
2.2.2 數(shù)字時(shí)鐘 6
2.2.3 芯片的選擇 7
2.2.4 74HC595芯片資料 7
2.2.5 串口通訊芯片的選擇 9
2.2.6 電源模塊 9
3 軟件設(shè)計(jì) 10
3.1 LED的工作原理及點(diǎn)陣原理 10
3.1.1 LED工作原理 10
3.1.2 點(diǎn)陣原理 11
3.2 軟件設(shè)計(jì)語(yǔ)言. 12
3.2.1 VB語(yǔ)言簡(jiǎn)介 12
3.2.2 VB語(yǔ)言的特點(diǎn) 13
3.3 程序設(shè)計(jì)流程圖 15
3.4 智能LED更新 15
3.4.1 安裝軟件 15
3.4.2 軟件使用方法 17
4 結(jié)論 19
致謝 20
參考文獻(xiàn) 21
附錄 PCB制版圖 22

摘要
 LED（Light Emitting Diode）顯示屏作為一種新興的顯示設(shè)備，目前已得到了飛速的發(fā)展，廣泛應(yīng)用于高速公路、城市主干道路、證券、體育場(chǎng)館、舞臺(tái)等公共場(chǎng)合。LED之所以受到廣泛重視而得到迅速發(fā)展，是與它本身所具有的優(yōu)點(diǎn)分不開的。這些優(yōu)點(diǎn)概括起來(lái)是：亮度高、工作電壓低、功耗小、小型化、壽命長(zhǎng)、耐沖擊和性能穩(wěn)定。LED的發(fā)展前景極為廣闊，目前正朝著更高亮度、更高耐氣候性、更高的發(fā)光密度、更高的發(fā)光均勻性，可靠性、全色化方向發(fā)展。
 LED點(diǎn)陣顯示系統(tǒng)，以STC89S54單片機(jī)為核心，設(shè)計(jì)制作出智能化、可更新的LED點(diǎn)陣顯示屏；可顯示實(shí)時(shí)年月日和時(shí)間，遇到重要的陰歷和陽(yáng)歷節(jié)日，自動(dòng)跳出歡度某某節(jié)日的祝詞，節(jié)日范圍為2000-2099年。
 LED點(diǎn)陣顯示系統(tǒng)，大部分功能通過軟件來(lái)實(shí)現(xiàn)，使電路簡(jiǎn)單明了，系統(tǒng)穩(wěn)定性大大提高。本系統(tǒng)不僅成功的實(shí)現(xiàn)了要求的基本功能,發(fā)揮部分也得到完全的實(shí)現(xiàn),而且有一定的創(chuàng)新功能。 
關(guān)鍵字：?jiǎn)纹瑱C(jī)；LED；顯示屏

Abstract
LED (Light Emitting Diode) display as a new display device, has been the development of rapid, widely used in highway, urban trunk roads, securities, stadiums, arena and other public occasions. LED importance because of widespread and rapid development, with its own advantages as inseparable. To sum up these advantages are: high brightness, low voltage, small power consumption, small size, long life, impact resistance and stable performance. LED very bright prospects for the development, the current is moving in a higher brightness, higher weather resistance, and higher luminous density, higher luminous uniformity, reliability, full color and direction.
LED dot matrix display system in order to STC89S54 single-chip microcomputer as the core of intelligent design can be updated display LED dot matrix; can display real-time date and time face significant lunar and solar calendar of festivals, celebrating the pop-up A message from a certain holiday, holiday in the range of 2000-2099.
LED dot matrix display system, most functional software to achieve, so that the circuit is simple and greatly improved system stability. The system not only achieved the success of the basic functions required to play the part has been fully realized, but also has some innovative features.
Keywords: MCU；LED；Displayer