【正文】 電梯智能化控制、各種報(bào)警系統(tǒng)，與計(jì)算機(jī)聯(lián)網(wǎng)構(gòu)成二級(jí)控制系統(tǒng)等。這種軟件代替硬件的控制技術(shù)也稱(chēng)為微控制技術(shù)，是傳統(tǒng)控制技術(shù)的一次革命?？梢赃@樣說(shuō)，現(xiàn)在的家用電器基本上都采用了MCS51控制，從電飯褒、洗衣機(jī)、電冰箱、空調(diào)機(jī)、彩電、其他音響視頻器材、再到電子秤量設(shè)備，五花八門(mén)，無(wú)所不在。 　　MCS51的指令系統(tǒng)近乎完善，指令系統(tǒng)中包含了全面的數(shù)據(jù)傳送指令、完善的算術(shù)和邏輯運(yùn)算指令、方便的邏輯操作和控制指令、對(duì)于編程來(lái)說(shuō)，是相當(dāng)靈活和方便的。s Taiwan WINBOND also patible with the development of C51 (it used to be referred to as MCS51 If there is no special statement C51, both with the mean MCS51 Series singlechip) microcontroller varieties. C51 obtained in recent years the development of rapid, C51 origin INTEL as a result of the pany was busy developing highend PC and not on the microprocessor to continue to develop their own singlechip, and by other manufacturers to its development, is the most typical PHILIPS and ATML pany, PHILIPS mainly to improve its performance, based on the original development of the highspeed I / O port, A / D converter, PWM (pulse width modulation), WDT and other enhancements, and lowvoltage, micropower consumption, extended serial bus (I2C) and control network bus (CAN) and other functions be improved. PHILIPS Corporation C51 in the development of lowpower, high speed and enhanced functionality made many contributions to the development of its first major C51 singlechip, they save 83Cxx and 87Cxx series of parallel expansion bus, suitable for control of household appliances as a category of singlechip microputer of the economy. ATMEL Corporation AT89Cxx introduced C51 range of patible singlechip, to be perfectly Flash (nonvolatile flash memory technology) EEPROM with 80C51 core bine the use of C51 is still the overall structure and mand system, Flash can be antierasable program memory can effectively reduce the development costs and allow for repeated use of singlechip microputer. Siemens also use the core of C51, C500 series has introduced singlechip, while maintaining patibility with the C51 instructions under the premise of the performance of their products has been further improved, especially in the antiinterference performance, electromagnetic patibility and munication control bus unique functions, and their products are monly used in the working environment of the occasion. Also applies to the field of telemunications and home appliance control. WINBOND Taiwan panies have also developed a series of C51patible microcontroller, and its products typically have a wealth of features, but also to its high quality and low price in the market also has a certain amount of points. 8051 is MCS51 series singlechip representation of products. It integrated a powerful central processing unit, including the instruments used in multiplication and division hardware, control registers 21 dedicated, 4kB the program memory, 128 bytes of data memory, 4 groups of 8 parallel port, two 16bit can be programming timer / counter, a