1621516點(diǎn)陣led電子顯示屏設(shè)計(jì)報(bào)告_單片機(jī)課程設(shè)計(jì)報(bào)告-wenkub.com
2025-08-15 19:14 本頁(yè)面
【正文】 G=0。=0xf0。TI=0。 0x0f。TH0=0xFC。dt)for (bt =0。}}delay(2000)。dispram[61]=sgp[i*2][j*2+1]。dispram[k*BLKN+1]=dispram[(k+1)*BLKN+1]。j16。}delay(2000)。dispram[l*BLKN+2] =dispram[l*BLKN+2] 1 | dispram[l*BLKN+3] 7。k++){for (l=0。i++){for(j=0。}delay(100)。l++){dispram[l*BLKN] = dispram[l*BLKN] 1 | dispram[l*BLKN+1] 7。j++)for(k=1。while (1){for(i=0。TMOD =0x01。 此字體下對(duì)應(yīng)的點(diǎn)陣為：寬x高=16x16 */0x10,0x00,0x08,0x0E,0x7F,0x70,0x22,0x40,0x14,0x40,0xFF,0x7E,0x08,0x48,0x08,0x48,0xFF,0x48,0x08,0x48,0x2C,0x48,0x2A,0x88,0x4A,0x88,0x89,0x08,0x2A,0x08,0x10,0x08,/* 文字: 生 *//* 宋體12。 此字體下對(duì)應(yīng)的點(diǎn)陣為：寬x高=16x16 */0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x7F,0xFE,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/* 文字: 歲 *//* 宋體12。 此字體下對(duì)應(yīng)的點(diǎn)陣為：寬x高=16x16 */0x01,0x00,0x02,0x80,0x04,0x40,0x08,0x20,0x10,0x18,0x2F,0xEE,0xC0,0x00,0x3E,0xF8,0x22,0x88,0x22,0x88,0x22,0x88,0x3E,0x88,0x22,0xB8,0x20,0x90,0x00,0x80,0x00,0x80,}。 此字體下對(duì)應(yīng)的點(diǎn)陣為：寬x高=16x16 */0x20,0x00,0x13,0xFC,0x10,0x04,0x40,0x04,0x47,0xE4,0x44,0x24,0x44,0x24,0x47,0xE4,0x44,0x24,0x44,0x24,0x47,0xE4,0x40,0x04,0x40,0x04,0x40,0x04,0x40,0x14,0x40,0x08,/* 文字: 珍 *//* 宋體12。unsigned char code dy[][32]={/* 文字: 珍 *//* 宋體12。 此字體下對(duì)應(yīng)的點(diǎn)陣為：寬x高=16x16 */0x00,0x10,0x24,0x10,0x22,0x10,0x23,0x10,0x22,0x10,0x20,0x10,0x20,0x10,0x21,0x10,0x22,0x10,0x2C,0x30,0x38,0x30,0x70,0x68,0x20,0xC4,0x01,0x07,0x06,0x02,0x00,0x00,/* 文字: 免 *//* 宋體12。 此字體下對(duì)應(yīng)的點(diǎn)陣為：寬x高=16x16 */0x01,0x00,0x1F,0xF0,0x11,0x10,0x1F,0xF0,0x01,0x00,0xFF,0xFE,0x00,0x00,0x1F,0xF0,0x10,0x10,0x11,0x10,0x11,0x10,0x11,0x10,0x12,0x90,0x04,0x40,0x18,0x38,0x60,0x10,/* 文字: 重 *//* 宋體12。 此字體下對(duì)應(yīng)的點(diǎn)陣為：寬x高=16x16 */0x20,0x80,0x3E,0xFC,0x51,0x20,0x8A,0x10,0x01,0x00,0x7F,0xFE,0x40,0x04,0x1F,0xE0,0x10,0x20,0x1F,0xE0,0x10,0x00,0x1F,0xF0,0x10,0x10,0x10,0x10,0x1F,0xF0,0x10,0x10,/* 文字: 好 *//* 宋體12。 此字體下對(duì)應(yīng)的點(diǎn)陣為：寬x高=16x16 */0x00,0x40,0x47,0xFC,0x30,0x40,0x23,0xF8,0x00,0x40,0x07,0xFE,0xF0,0x00,0x13,0xF8,0x12,0x08,0x13,0xF8,0x12,0x08,0x13,0xF8,0x16,0x08,0x1A,0x08,0x12,0x28,0x02,0x10,/* 文字: 乘 *//* 宋體12。sbit SCLR =0x95。在軟件設(shè)計(jì)時(shí)，參考了很多網(wǎng)上搜索的資料，經(jīng)過(guò)無(wú)數(shù)次的修改和調(diào)試，最后確定了這次設(shè)計(jì)的源程序。我在做本次設(shè)計(jì)中，主要是硬件調(diào)試，在程序調(diào)試時(shí)觀察字左移顯示是否完全顯示完.，還在字段間加空格使得顯示更加美觀，另外顯示的延時(shí)也要取得恰當(dāng)。顯示屏的刷新率由定時(shí)器T0的溢出率和單片機(jī)的晶振頻率決定。硬件調(diào)試時(shí)首先要檢查晶振是否會(huì)正常起振，既看AT89S52的18腳是否有約12MHZ的頻率，看30是否有1/6的晶振頻率；然后再檢查74LS154的使能端是否正常工作；再看74LS595的SER端是否有脈沖并檢查其它引腳的脈沖和時(shí)序是否都正常工作。系統(tǒng)主程序的流程圖如圖18所示。為消除在切換行顯示數(shù)據(jù)的時(shí)候產(chǎn)生的拖尾現(xiàn)象，驅(qū)動(dòng)程序先要關(guān)閉顯示屏，等顯示數(shù)據(jù)打入輸出鎖存器并鎖存，然后再輸出新的行號(hào)，重新打開(kāi)顯示。顯示驅(qū)動(dòng)程序負(fù)責(zé)向屏體送顯示數(shù)據(jù)，并負(fù)責(zé)產(chǎn)生行掃描信號(hào)和其它控制信號(hào)，配合完成LED顯示屏的掃描顯示工作。芯片的輸出端為Q0——Q7，最高位Q7可以做為多片74LS595級(jí)聯(lián)應(yīng)用向下級(jí)的芯片輸入。RCLK是輸出鎖存器的打入信號(hào)，其上升沿將移位寄存器的輸出打入輸出鎖存器。74HC595的內(nèi)部結(jié)構(gòu)如圖16它的輸入端有8個(gè)串行移位寄存器，每個(gè)移位寄存器的輸出都連接一個(gè)輸出鎖存器。 74LS154芯片介紹74LS154為4線16線譯碼器，其管腳圖如圖14所示。它具有一個(gè)8位串入并出的移位寄存器和一個(gè)8位輸出鎖存器的結(jié)構(gòu)，而且移位寄存器和輸出鎖存器的控制是各自獨(dú)立的，可以實(shí)現(xiàn)在顯示本行各列數(shù)據(jù)的同時(shí)，傳送
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