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Publishing Company, 1985 附 錄A 系統(tǒng)原理圖附 錄B 仿真圖PCB板附 錄C 系統(tǒng)源程序includeinclude define uchar unsigned chardefine uint unsigned intuchar code table[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90}。sbit key0=P1^0。 // 功能鍵sbit key4=P1^4。sbit dula=P1^5。//sbit WP=P3^5。//uchar danjia1=11,danjia2=22,danjia3=33,qibu=44,danjiazc。void delay(uint x) { int i,j。j0。_nop_()。_nop_()。}void I2C _init(){ Sda=1。 delayNOP( ) 。 delayNOP( ) 。 delayNOP( ) 。 delayNOP( ) 。 delayNOP( )。 delayNOP( )。 delayNOP( )。 Scl=0。 else Sda=0。 BitCounter。uchar temp1=0。delayNOP( )。 temp=temp|0x01。temp=temp1。return(temp)。 Send(Addresss)。 stop()。 Send(0xa0)。 start()。 NoAck()。 I2C _init()。 P3=0x10。 } } */ void display( uint zongjine0,uint dengdai0,uint licheng0,uint danjia0) //數(shù)碼管//顯示{ uint jshi,jge,jjiao,dengd,lshi,lge,dge,djiao。 jjiao=zongjine0%100%10。 dge=danjia0/10。 wela=0。 delay(4)。 dula=1。 delay(4)。 dula=1。 wela=1。 P0=table[dengd]。 P2=0x10。0x7f。 P2=0x20。 dula=0。 wela=0。 dula=0。 wela=0。 delay(4)。 while(!key3)。 if(key1==0) { delay(5)。 delay(5)。 if(danjia1==1) danjia1=99。 } } display(0,1,0,danjia1)。 if(key1==0) { danjia2++。 while(!key1)。 while(!key2)。 } if(key3num==3) //調(diào)等待單價(jià) danjia3 { // display(0,3,0,danjia3)。 if(key1==0) { danjia3++。 while(!key1)。 while(!key2)。 } if(key3num==4) //調(diào)起步價(jià) { // display(0,4,0,qibu)。 if(key1==0) { qibu++。 while(!key1)。 while(!key2)。 } if(key3num==5) //退出功能鍵 { key3num=0。 } if(key3==0) { delay(5)。 while(!key3)。 zongjine=0。 danjia2=RdFromROM(0x02)。 //數(shù)碼管動(dòng)態(tài)掃描的定時(shí)器時(shí)基個(gè)數(shù) bb=0。 EA=1。 TH0=(6553646080)/256。 //定時(shí)50ms //EA=1。 TL1=(655362765)%256。 TR1=1。 wela=0。 delay(1000) 。 //金額計(jì)算 else //等價(jià)于if((led=1)amp。 //zongjine=qibu+7*danjia+dengdai*danjia3+(licheng/10+1)*danjia。 qiehuantemp=!qiehuantemp。 //init()。 //display(0,0,0,danjia)。 while(1) { //fangbo=qufan。 jisuan()。 danjia=RdFromROM(0x05)。 { while(!key0)。 } } }} void timer0() interrupt 1 //等待時(shí)間判斷及計(jì)時(shí) { //inter=0。 //TL0=(6553650000)%256。 //if(temp=tempamp。 dd=0。 if(exter==0) // 負(fù)跳變有效 { IT1=1。 } } while(!exter)。 TL1=(655362765)%256。 if(cc==1) //T=6ms的方波，則每500個(gè)中斷為3s， { cc=0。 inter++。 led=0。s largest puter. Modern human life used in almost every piece of electronic and mechanical products will be integrated single , telephone, calculator, home appliances, electronic toys, handheld puters and puter accessories such as a mouse with a 12 in both the Department of SCM. Personal puter will have a large number of SCM in the work. General car with more than 40 SCM, plex industrial control systems may even have hundreds of SCM in the same time work! SCM is not only far exceeds the number of PC and other puting the sum, or even more than the number of human beingsSingle chip, also known as singlechip microcontroller, it is not plete a certain logic chips, but to a puter system integrated into a to a microputer, and puter than just the lack of a microcontroller I / O devices. General talk: a chip bees a puter. Its small size, light weight, cheap, for the study, application and development of facilities provided. At the same time, learning to use the MCU is to understand the principle and structure of the puter the best choice.SCM and the puter functions internally with similar modules, such as CPU, memory, parallel bus, the same effect as well, and hard disk memory devices, and different is its performance of these ponents were relatively weak many of our home puter, but the price is low , usually not more than 10 yuan you can do with it ...... some control for a class is not very plicated electrical work is enough of. We are using automatic drum washing machine, smoke hood, VCD and so on appliances which could see its shadow! ...... It is primarily as a control section of the core ponentsIt is an online realtime control puter, controlline is that the scene is needed is a stronger antijamming ability, low cost, and this is, and offline puter (such as home PC), the main difference.Single chipMCU is through running, and can be modified. Through different procedures to achieve different functions, in particular special unique features, this is another device much effort needs to be done, some great efforts are very difficult to do. A not very plex functions if the