【正文】 ()。 delay(5)。s 21 win. Michel Platini, president of European football39。s time, your ideas are always special to clear. Want, want, line is clear, as if nothing could shake his. Also once seemed to be determined to do something, but more often is he backed out at last. Dislike his cowardice, finally found that there are a lot of love, there are a lot of miss, like shadow really have been doomed. Those who do, just green years oneself give oneself an arm injection, or is a selfrighteous spiritual. 一個(gè)人的時(shí)候，自己的想法總是特別地清晰。ll be traveling fast, so despite the distance, it will not be like diving into the deep end of a pool. It will be like he is diving into the shallow end. Skydiver preps for the big jump When he jumps, he is expected to reach the speed of sound 690 mph (1,110 kph) in less than 40 seconds. Like hitting the top of the water, he will begin to slow as he approaches the more dense air closer to Earth. But this will not be enough to stop him pletely. If he goes too fast or spins out of control, he has a stabilization parachute that can be deployed to slow him down. His team hopes it39。t want to give vent to out your inner voice can be in the high school children of the feelings in a period, but was eventually infarction when graduation party in the throat, later again stood on the pitch he has sweat profusely, looked at his thrown a basketball hoops, suddenly found himself has already can39。s antiracism taskforce, is in London for the Football Association39。 delay(5)。k++) write_data(tab2[4*(m5)+k])。 } if(m==1)m=1。 } } void keyscan()/* 按鍵 2 進(jìn)行減 1*/ { uint k。//A/D 轉(zhuǎn)換啟動(dòng)信號(hào)，正脈沖啟動(dòng)選中的模擬信號(hào)開始轉(zhuǎn)換 ADA=ADDA。//使能位置低電平 write_(0x38)。 delay(10)。 uchar num,m=0,getdata=0。//數(shù)據(jù)命令選擇位 sbit lcden=P3^1。 圖 11 鍵盤與單片機(jī)的連接電路 系統(tǒng)整體電路圖 根據(jù)上述 各個(gè)部分的電路，將每個(gè)部分的電路在仿真軟件 PROTUES 中連接起來(lái)，仔細(xì)檢查線路后確保無(wú)誤后就可以得到系統(tǒng)的整體電路圖如 12 所示。 1602 液晶模塊內(nèi)部的控制器共有 11條控制指令，如 下 表 2所示 ，其中 1為高電平、 0為低電平 。當(dāng) OE 輸入高電平時(shí)， ADC 的輸出三態(tài)門打開，轉(zhuǎn)換結(jié)果的數(shù)字量可輸出到數(shù)據(jù)總線。直到 A/D 轉(zhuǎn)換完成， EOC 變?yōu)楦唠娖?，指?A/D 轉(zhuǎn)換結(jié)束，結(jié)果數(shù)據(jù)已存入鎖存器，這個(gè)信號(hào)可用作中斷申請(qǐng)。本文采用逐次逼近型 A／ D 轉(zhuǎn)換器，該類 A／ D 轉(zhuǎn)換器轉(zhuǎn)換精度高，速度快，價(jià)格適中，是目前種類最多，應(yīng)用最廣的 A／ D轉(zhuǎn)換器。 數(shù)據(jù)采集電路的原理框 如 圖 1所示。 圖 1 數(shù)據(jù)采集 電路的原理框圖 硬件電路的設(shè)計(jì) 單片機(jī)的最小系統(tǒng) 設(shè)計(jì) 單片機(jī)最小系統(tǒng)是能補(bǔ)足單片機(jī)工作的最簡(jiǎn)單電路，它由單片機(jī)、電源、晶體振蕩器、復(fù)位電路等構(gòu)成。逐次逼近型 A／ D 轉(zhuǎn)換器一般由比較器、 D／ A 轉(zhuǎn)換器、寄存器、時(shí)鐘發(fā)生器以及控制邏輯電路組成。當(dāng) OE輸入高電平 時(shí)，輸出三態(tài)門打開，轉(zhuǎn)換結(jié)果的數(shù)字量輸出到數(shù)據(jù)總線上。 A／ D 轉(zhuǎn)換器的位數(shù)決定著信號(hào)采集的精度和分辨率。 表 2 LCD1602控制指令 序號(hào) 指令 RS R/W D7 D6 D5 D4 D3 D2 D1 D0 1 清顯示 0 0 0 0 0 0 0 0 0 1 2 光標(biāo)返回 0 0 0 0 0 0 0 0 1 * 3 置輸入模式 0 0 0 0 0 0 0 1 I/D S 4 顯示開 /關(guān)控制 0 0 0 0 0 0 1 D C B 5 光標(biāo)或字符移位 0 0 0 0 0 1 S/C R/L * * 6 置功能 0 0 0 0 1 DL N F * * 7 置字符發(fā)生存貯器地址 0 0 0 1 字符發(fā)生存貯器地址 8 置數(shù)據(jù)存貯器地址 0 0 1 顯示數(shù)據(jù)存貯器地址 9 讀忙標(biāo)志或地址 0 1 BF 計(jì)數(shù)器地址 10 寫數(shù)到 CGRAM 或 DDRAM） 1 0 要寫的數(shù)據(jù)內(nèi)容 指令 1：清顯示，指令碼 01H,光標(biāo)復(fù)位到地址 00H 位置。 武漢理工大學(xué)《 能力拓展訓(xùn)練報(bào)告 》課程設(shè)計(jì)說(shuō)明書 11 圖 12 系統(tǒng)整體電路圖 軟件設(shè)計(jì) 此次設(shè)計(jì)的多通道數(shù)據(jù)采集系統(tǒng)設(shè)置了 8 路模擬電壓輸入通道。//使能位 sbit lcdrw=P3^2。 uint temp=0。 lcden=0。 write_(0x0c)。 ADB=ADDB。 if(key1==0) { m。 } while(key1==0)。 } if(m==9)m=0。 AdTr(1,1,0,6)。s 150th anniversary celebrations and will attend City39。t remember his appearance. 童年時(shí)，覺得壓歲錢和新衣服是過(guò)年必備， 但是隨著年齡的推進(jìn)，會(huì)越來(lái)越發(fā)現(xiàn)，那些東西根本就可有可無(wú)；初中時(shí)，以為要有一場(chǎng)暗戀才意味著真正的成長(zhǎng)，但三年過(guò)去后，自己心平氣和的寫同學(xué)錄的時(shí)候，突然就發(fā)現(xiàn)是不是真正的成長(zhǎng)了，好像并沒有那么重要了；然后到了高中，覺得非要吐露出自己的心聲才能為高中生涯里的懵懂情愫劃上一個(gè)句點(diǎn)，但畢業(yè)晚會(huì)的時(shí)候最終還是被梗塞在了咽喉，后來(lái)再次站在他曾經(jīng)揮汗如雨的球場(chǎng)，看著他投過(guò)籃球的球框時(shí)，突然間發(fā)現(xiàn)自己已經(jīng)想不起他的容顏。s not needed. Instead, he plans to deploy his 270squarefoot (25squaremeter) main chute at an altitude of around 5,000 feet (1,524 meters). In order to deploy this chute successfully, he will have to slow to 172 mph (277 kph). He will have a reserve parachute that will open automatically if he loses consciousness at mach speeds. Even if everything goes as planned, it won39。 A person39。s about how he felt and I would like to speak to him first to find out what his experience was. Uefa has opened disciplinary proceedings against CSKA for the racist behaviour of their fans during City39。 AdTr(1,1,1,7)。 //等待按鍵釋放 } void main() { LcdInit()。 if(m5) { write_(0x80+0x07)。 write_data(tab5[m1])。 delay(5)。 write_(0x01)。 P0=date。 for(x=t。 sbit ADB=P2^1。當(dāng)通過(guò)電位器調(diào)節(jié) AD 轉(zhuǎn)換器輸入端的電壓時(shí)，模擬電壓值經(jīng)過(guò) AD 轉(zhuǎn)換后，經(jīng)由單片機(jī)將轉(zhuǎn)換后的電壓值發(fā)送至P0 口，供 LCD 進(jìn)行顯示。 指令 3：光標(biāo)和顯示模式設(shè)置 I/D：光標(biāo)移動(dòng)方向，高電平右移，低電平左移 S:屏幕上所有文字是否左移或者右移。 8位 A／ D轉(zhuǎn)換器的