畢業(yè)論文-基于at89c52單片機(jī)的音樂流水led彩燈設(shè)計(jì)(參考版)
2025-06-10 10:47本頁面
【正文】 an, the starting point of the ancient Silk Road, a trade 單片機(jī)原理及系統(tǒng)課程設(shè)計(jì)報(bào)告 2 channel established more than 2,000 years ago linking China, Central Asia and Europe. 。s cooperation with Central Asian countries, a senior official said. Shaanxi Governor Lou Qinjian said the province is fresh, rich and unique, as it was when it anchored one end of the ancient Silk Road. It is the best option for acmodating industrial transfers from East China or the world at large, he said on Wednesday in Xi39。s business development. Rudy Buttignol, president of the public broadcasting pany in British Columbia, Canada, said his work requires frequent travel to Chengdu and the policy makes the trips easier. Data from the city39。s largest breeding and research center. Three days are long enough for foreign visitors to visit those iconic tourist spots, he noted. The city is home to the remains of the Jin sha civilization that dates back more than 3,000 years as well as the Qing cheng Mountains and the Du jiang yan irrigation system. Qing cheng has long been recognized as the birthplace of Taoism, China39。s 72hour visafree policy has attracted wide attention from both Chinese and foreign experts and businessmen since it took effec t on Sept 1 last year. The program permits citizens from 51 countries and regions including the United States, Australia, Canada and Japan who have valid visas and flight tickets to a third country to spend three days in the city. The c apital of Sichuan province is the first city in the western region of China to offer foreign tourists a threeday visa and the fourth nationwide to adopt the policy following Shanghai, Beijing and Guangzhou. Li Zhiyong, deputy dean of the tourism institute at Sichuan University, said the move contributes to a large increase in the number of overseas tourists and raises the city39。 PlayMusic(1)。 } P0=0x03。 } if(K1==1) { P3=0x07。 P2=0x00。 delay_1ms(500)。b++) { P0=0xff。 for(b=0。 } } P0=0x00。b++) { P0=_cror_(P0,1)。 for(b=0。 P0=0x55。 delay_1ms(300)。 delay_1ms(300)。 delay_1ms(300)。 delay_1ms(300)。 P0=0x00。 P0=0x80。 delay_1ms(300)。 delay_1ms(300)。 delay_1ms(300)。 delay_1ms(300)。 } P0=0x00。b++) { P0=_crol_(P0,1)。 for(b=0。 P2=0x00。m2。 delay_1ms(1000)。 P0=0xff。 if(K1==0) { P3=0x00。 } void main() //主程序 { uchar b,m。 TH0=th0_f。 break。 P0=0xff。 delay_1ms(190)。 } tl0_f=freq[music1[i]][0]。 } if(i==600) { P0=0xfe。amp。 } if(i==500) { P0=0x01。amp。 } if(i==400) { P0=0xaa。amp。 d1=d2=0。 d2=~d2。amp。 d1=1。 } if(i==200) { P0=0x55。i200) { P0=_cror_(P0,1)。 } 單片機(jī)原理及系統(tǒng)課程設(shè)計(jì)報(bào)告 14 if(i100amp。 } if(i==100) { P0=0x22。 if(k==1) //判斷開關(guān)是否處于開啟位置（是則播放音樂 ，否則停 止） { if(i100) { P0=_crol_(P0,1)。 delay_1ms(190)。i707。 //定時(shí)器 0 容許 EA = 1。 //定時(shí)器 /計(jì)數(shù)器工作方式寄存器負(fù)值 ， 設(shè)定定時(shí)器 0 工作方式1 TR0 = 1。 void PlayMusic(int k) // 音樂程序 { unsigned int i。 } } //四階 35 個(gè)音符對(duì)應(yīng)的 T0 中斷初值 ， 及輸出頻率對(duì)照表 static code freq[37][2] = { 0xA9,0xEF, //00220HZ ,
畢業(yè)設(shè)計(jì)相關(guān)推薦
鄂ICP備17016276號(hào)-1