【正文】 ,靜態(tài)時(shí)鐘模式。AT90系列單片機(jī)是增強(qiáng)RISC結(jié)構(gòu)、全靜態(tài)工作方式、內(nèi)載在線可編程Flash的單片機(jī),也叫AVR單片機(jī). PHLIPIS 51PLC系列單片機(jī)(51單片機(jī))： 　　PHILIPS公司的單片機(jī)是基于80C51內(nèi)核的單片機(jī),嵌入了掉電檢測、模擬以及片內(nèi)RC振蕩器等功能,這使51LPC在高集成度、低成本、低功耗的應(yīng)用設(shè)計(jì)中可以滿足多方面的性能要求. HOLTEK單片機(jī)： 臺(tái)灣盛揚(yáng)半導(dǎo)體的單片機(jī),價(jià)格便宜,種類較多,但抗干擾較差,適用于消費(fèi)類產(chǎn)品. TI公司單片機(jī)(51單片機(jī))： 　　,具有多種存儲(chǔ)模式、多種外圍接口模式,適用于復(fù)雜的實(shí)時(shí)控制場合。MSP430系列單片機(jī)是一種超低功耗、功能集成度較高的16位低功耗單片機(jī),特別適用于要求功耗低的場合 是臺(tái)灣松翰公司的單片，大多為8位機(jī)，有一部分與PIC 8位單片機(jī)兼容，價(jià)格便宜，系統(tǒng)時(shí)鐘分頻可選項(xiàng)較多，有PMW ADC 內(nèi)振 內(nèi)部雜訊濾波。缺點(diǎn)RAM空間過小，抗干擾較好。 From the world of radio in the world to a single chipModern puter technology, industrial revolution, the world economy from the capital into the economy to knowledge economy. Field in the electronic world, from the 20th century into the era of radio to puter technology in the 21st century as the center of the intelligent modern era of electronic systems. The basic core of modern electronic systems are embedded puter systems (referred to as embedded systems), while the microcontroller is the most typical and most extensive and most popular embedded systems.First, radio has created generations of excellence in the worldFifties and sixties in the 20th century, the most representative of the advanced electronic technology is wireless technology, including radio broadcasting, radio, wireless munications (telegraph), Amateur Radio, radio positioning, navigation and other telemetry, remote control, remote technology. Early that these electronic technology led many young people into the wonderful digital world, radio show was a wonderful life, the prospects for science and technology. Electronics began to form a new discipline. Radio electronics, wireless munications began eworld journey.Radio technology not only as a representative of advanced science and technology at that time, but also from popular to professional fields of science, attracting the young people and enable them to find a lot of fun. Ore from the bedside to the superheterodyne radio radio。 report issued from the radio amateur radio stations。 from the telephone, electric bell to the radio control model. Became popular youth radio technology, science and technology education is the most popular and most extensive content. So far, many of the older generation of engineers, experts, Professor of the year are radio enthusiasts. Fun radio technology, radio technology, prehensive training, from basic principles of electronics, electronic ponents to the radiobased remote control, telemetry, remote electronic systems, has trained several generations of technological excellence.Second, from the popularity of the radio era to era of electronic technology The early radio technology to promote the development of electronic technology, most notably electronic vacuum tube technology to semiconductor electronic technology. Semiconductor technology to realize the active device miniaturization and low cost, so more popular with radio technology and innovation, and to greatly broaden the number of nonradiocontrol areas. The development of semiconductor technology lead to the production of integrated circuit, forming the modern electronic technology leap from discrete electronics into the era of era of integrated circuits. Electronic design engineers no longer use the discrete electronic ponents designed circuit modules, and direct selection of integrated circuit ponents constitute a single system. They freed the design of the circuit unit dedicated to system design, greatly liberating the productive forces of science and technology, promote the wider spread of electronic systems. Semiconductor integrated circuits in the basic digital logic circuits first breakthrough. A large number of digital logic circuits, such as gates, counters, timers, shift registers, and analog switches, parators, etc., for the electronic digital control provides excellent conditions for the traditional mechanical control to electronic control. Power electronic devices and sensor technology to make the original to the radio as the center of electronic technology turned to mechanical engineering in the field of digital control systems, testing in the field of information collection, movement of electrical mechanical servo drive control object. Semiconductor and integrated circuit technology will bring us a universal age of electronic technology, wireless technology as the field of electronic technology a part of. 70 years into the 20th century, large scale integrated circuit appeared to promote the conventional electronic circuit unitspecific electronic systems development. Many electronic systems unit into a dedicated integrated devices such as radios, electronic clocks, calculators, electronic engineers in these areas from the circuit, the system designed to debug into the device selection, peripheral device adapter work. Electronic technology, and electronic products enriched, electronic engineers to reduce the difficulty, but at the same time, radio technology, electronic technology has weakened the charm. The development of semiconductor integrated circuits classical electronic systems are maturing, remain in the large scale integrated circuit other than the shrinking of electronic technology, electronic technology is not the old days of radio fun times and prehensive engineering training.Third, from the classic era of electronic technology to modern electronic technology of the times 80 years into the 20th century, the century of economic change is the most important revolution in the puter. The puter revolution in the most important sign is the birth of the puter embedded applications. Modern puter numerical requirements should be born. A long period of time, is to develop the massive puter numerical duty. But the puter shows the logic operation, processing, control, attracting experts in the field of electronic control, they want development to meet the control object requirements of embedded applications, puter systems. If you meet the massive