外文文献及翻译-单片机

外文文献及翻译-单片机内容摘要：

trol systems may even have hundreds of SCM in the same time work! SCM is not only far exc eeds the number of PC and other puting the sum, or even more than the number of human 7 beings. 2 MCU introduced MCU ,also known as singlechip microcontroller, it is not c omplete a certain logic c hips, but to a puter system integrated into a chip. Equivalent to a microputer, and puter than just the lack of a microc ontroller I / O devic es. General talk: a c hip bees a puter. Its small size, light weight, cheap, for the study, applic ation and development of fac ilities provided. At the same time, learning to use the MCU is to understand the princ iple and struc ture of the puter the best c hoice. MCU and the puter use is also similar to the module, such as CPU, memory, parallel bus, as w ell as the role and the same hard disk memory,is it different from the performance of these ponents are relatively weak in our home c omputer a lot ,but the pric e is low , there is generally no more than 10 yuan ......can use it to make some control for a c lass of electrical work is not very plex is suffic are using automatic drum washing machines ,smoke hood, VCD and so on inside the home applianc es can see it39。 s shadow!......It is mainly as part of the c ore c omponent of the c ontrol. It is an online realtime control c omputer, 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. By singlechip process ,and can be different proc edures to achieve different functions, in particular spec ial unique features, this is another device muc h effort ne eds to be done, some great efforts are very difficult to do. A not very plex functions if the 5039。 s w ith the United States developed 74 series, or the 6039。 s CD4000 series of these pure hardware buttoned, then the c irc uit must be a large PCB board! But if the United States if the 7039。 s w ith a series of succ essful SCM market, the result w ill be a drastic change! Just because you are prepared by mic roputer programs c an achieve high intelligenc e, high efficiency and high reliability! As the microc ontroller on the costsensitive, so now the dominant software or the low est level assembly language, whic h is the low est level in addition to more than binary machine code language, and as so low why is the use? Many highlevel language has reached the level of visual programming Why is not it? The reason is simply that there is no home puter as a single chip CPU, not as hard as a mass storage devic e. A visualization of small highlevel language program whic h even if only one button, w ill reach tens of K of size! For the home PC39。 s hard drive in terms of nothing, but in terms of the MCU is not acceptable. SCM in the utilization of hardware resourc es to be very high for the job so although the original is still in the pilation of a lot of use. The same token, if the giant c omputer operating system and applic ations run up to get home PC, home PC, also can not afford to. Can be said that the twentieth century across the three power era, that is, the age of electric ity, the elec tronic age and has entered into the c omp uter age. How ever, this puter, usually refers to the personal c omputer, referred to as PC. It consists of the host, keyboard, 8 monitor and other ponents. Another type of puter, most people do not know how. This puter is to give all kinds of intelligent machines single chip (also known as microcontroller). As the name suggests, this puter system took only a minimal integrated c ircuit, c an be a simple operation and control. Bec ause it is small, usually hidden in the c harged mechanical stomac h in. It is in the devic e, like the human brain plays a role, it goes wrong, the whole plant w as paralyzed. Now, this microcontroller has a very broad field of use, suc h as smart meters, realtime industrial control, c ommunic ations equipment, navigation sys tems, and household applianc es. Once all kinds of products were using SCM, can serve to upgrade the effectiveness of products, often in the produc t name preceded by the adjective intelligent, such as intelligent w ashing machines. Now some technic al personnel of factories or other amateur electronics developers to engage in out of c ertain produc ts, not the c ircuit is too c omplic ated, that function is too simple and can easily be copied. The reason may be stuck in the product did not use a mic rocontroller or other p。