【導讀】為核心，采用串行傳輸、動態(tài)掃描技術。以LED屏的顯示電路和單片機控制電路為核心，簡單的數(shù)字、字母、漢字、圖形等。該系統(tǒng)是通過S51芯片控制一個行驅動器74HC154和。四個列驅動器74HC595來驅動顯示屏顯示。設計過程中綜合應用了數(shù)字電路，模擬電路，單片機等方面的知識，并且還要學習protel軟件和新的器件。穎、顯示效果好、實用性強。理論與實際結合，本設計符合應用電子專業(yè)的培養(yǎng)目標。

　　

【正文】 =0。q8。q++) { dat=!((_cror_(disbuf[n],q))amp。0x01)。//右移 (7q)位，從低位到高位取。即 595 發(fā)送， clock=0。 clock=1。 //寄存器時鐘上跳沿，將一位數(shù)據(jù)存入移位寄存器。 } } /***列掃描 ***/ void lie() { gate=0。 //允許列選擇 P2=count。 count++。 if(count==16) { count=0。 count++。 } } 字庫 /**無移動 **/ unsigned char code shuzi[]={ 0x00,0x00,0x3F,0xFE,0x20,0x02,0x20,0x02,0x20,0x02,0x20,0x02,0x3F,0xFE,0x00,0x00,/*0,0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0xFE,0x00,0x00,/*1,1*/ 0x00,0x00,0x20,0xFE,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x3F,0x82,0x00,0x00,/*2,2*/ 0x00,0x00,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x3F,0xFE,0x00,0x00,/*3,3*/ 0x00,0x00,0x3F,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x3F,0xFE,0x00,0x00,/*4,4*/ 0x00,0x00,0x3F,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0xFE,0x00,0x00,/*5,5*/ 0x00,0x00,0x3F,0xFE,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0xFE,0x00,0x00,/*6,6*/ 0x00,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x3F,0xFE,0x00,0x00,/*7,7*/ 0x00,0x00,0x3F,0xFE,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x3F,0xFE,0x00,0x00,/*8,8*/ 0x00,0x00,0x3F,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x3F,0xFE,0x00,0x00,/*9,9*/ }。 /**左移一 位 **/ unsigned char code shuzi1[]={ 0x3F,0xFE,0x20,0x02,0x20,0x02,0x20,0x02,0x20,0x02,0x3F,0xFE,0x00,0x00,0x00,0x00,/*0,0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0xFE,0x00,0x00,0x00,0x00,/*1,1*/ 0x20,0xFE,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x3F,0x82,0x00,0x00,0x00,0x00,/*2,2*/ 0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x3F,0xFE,0x00,0x00,0x00,0x00,/*3,3*/ 0x3F,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x3F,0xFE,0x00,0x00,0x00,0x00,/*4,4*/ 0x3F,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0xFE,0x00,0x00,0x00,0x00,/*5,5*/ 0x3F,0xFE,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0xFE,0x00,0x00,0x00,0x00,/*6,6*/ 0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x3F,0xFE,0x00,0x00,0x00,0x00,/*7,7*/ 0x3F,0xFE,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x3F,0xFE,0x00,0x00,0x00,0x00,/*8,8*/ 0x3F,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x3F,0xFE,0x00,0x00,0x00,0x00,/*9,9*/ }。 /**右移一位 **/ unsigned char code shuzi2[]={ 0x00,0x00,0x00,0x00,0x3F,0xFE,0x20,0x02,0x20,0x02,0x20,0x02,0x20,0x02,0x3F,0xFE,/*0,0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0xFE,/*1,1*/ 0x00,0x00,0x00,0x00,0x20,0xFE,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x3F,0x82,/*2,2*/ 0x00,0x00,0x00,0x00,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x3F,0xFE,/*3,3*/ 0x00,0x00,0x00,0x00,0x3F,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x3F,0xFE,/*4,4*/ 0x00,0x00,0x00,0x00,0x3F,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0xFE,/*5,5*/ 0x00,0x00,0x00,0x00,0x3F,0xFE,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0xFE,/*6,6*/ 0x00,0x00,0x00,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x3F,0xFE,/*7,7*/ 0x00,0x00,0x00,0x00,0x3F,0xFE,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x3F,0xFE,/*8,8*/ 0x00,0x00,0x00,0x00,0x3F,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x3F,0xFE,/*9,9*/ }。 /****漢字庫 **/ unsigned char code hanzi1[]={ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/* ,0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/* ,0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/* ,0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/* ,0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x02,0x80,0x04,0x40, 0x09,0x20,0x12,0x90,0x24,0x48,0x48,0x24,0x90,0x12,0x20,0x09,0x40,0x04,0x00,0x00,/*《 ,0*/ 0x00,0x02,0x00,0x0C,0x3F,0xF0,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0xA0,0x00, 0x60,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x00,0x00,/* 廣,0*/ 0x00,0x00,0x20,0x00,0x20,0x04,0x23,0x18,0x2D,0x70,0x31,0x20,0xE1,0x04,0x21,0x02, 0x2F,0xFF,0x21,0x00,0x21,0x40,0x21,0x20,0x21,0x18,0x20,0x0C,0x00,0x00,0x00,0x00,/* 東,1*/ 0x08,0x20,0x48,0x40,0x49,0x80,0x4E,0x00,0x7F,0xFF,0x8A,0x00,0x89,0x20,0x00,0x20, 0x44,0x20,0x33,0x40,0x00,0x40,0x00,0x40,0xFF,0xFF,0x00,0x80,0x00,0x80,0x00,0x00,/* 科,2*/ 0x02,0x00,0x0C,0x40,0x08,0x40,0x48,0x40,0x3A,0x40,0x2A,0x40,0x0A,0x42,0x8A,0x41, 0x7A,0xFE,0x2B,0x40,0x0A,0x40,0x18,0x40,0xEA,0x40,0x4C,0x40,0x08,0x40,0x00,0x00,/*學 ,3*/ 0x40,0x08,0x40,0x08,0x7F,0xF0,0x49,0x10,0x49,0x10,0x7F,0xFF,0x40,0x20,0x00,0x22, 0x7F,0x84,0x41,0x38,0x41,0x10,0x41,0x00,0x41,0x20,0x7F,0x90,0x00,0x0C,0x00,0x00,/* 職,4*/ 0x00,0x04,0x08,0x04,0x06,0x04,0x01,0xC4,0x00,0x84,0xFF,0xFC,0x00,0x04,0x00,0x04, 0x00,0x04,0xFF,0xFC,0x00,0x44,0x01,0x84,0x06,0x04,0x1C,0x0C,0x08,0x04,0x00,0x00,/* 業(yè),5*/ 0x10,0x80,0x10,0x82,0x11,0x01,0xFF,0xFE,0x12,0x00,0x14,0x02,0x00,0x02,0x13,0x04, 0x12,0xC8,0x12,0x30,0xFE,0x30,0x12,0x48,0x13,0x84,0x12,0x06,0x10,0x04,0x00,0x00,/* 技,6*/ 0x08,0x08,0x08,0x08,0x08,0x10,0x08,0x20,0x08,0x40,0x09,0x80,0x0A,0x00,0xFF,0xFE, 0x0A,0x00,0x09,0x00,0x48,0x80,0x28,0x60,0x08,0x30,0x08,0x18,0x08,0x10,0x00,0x00,/* 術,7*/ 0x02,0x00,0x0C,0x40,0x08,0x40,0x48,0x40,0x3A,0x40,0x2A,0x40,0x0A,0x42,0x8A,0x41, 0x7A,0xFE,0x2B,0x40,0x0A,0x40,0x18,0x40,0xEA,0x40,0x4C,0x40,0x08,0x40,0x00,0x00,/*學 ,8*/ 0x7F,0xFF,0x40,0x00,0x4C,0x40,0x52,0x20,0x61,0xC1,0x30,0x82,0x24,0x8C,0x24,0xF0, 0xA4,0x80,0x64,0x80,0x24,0xFE,0x24,0x81,0x24,0x81,0x30,0x81,0x20,0x8F,0x00,0x00,/* 院,9*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/* ,10*/