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【正文】 CU development has its objective factors. In the development of MCU, the most famous manufacturers as the number of Philips Corporation. Philips pany in embedded applications, its great advantage, the MCS51 singlechip microputer from the rapid 4 development of the microcontroller. Therefore, when we look back at the path of development of embedded systems, do not fet Intel and Philips in History。 Because it is small, usually hidden in the charged mechanical stomach in. It is in the 3 device, like the human brain plays a role, it goes wrong, the whole plant was paralyzed. Now, this microcontroller has a very broad field of use, such as smart meters, realtime industrial control, munications equipment, navigation systems, and household appliances. Once all kinds of products were using SCM, can serve to upgrade the effectiveness of products, often in the product name preceded by the adjective intelligent, such as intelligent washing machines. Now some technical personnel of factories or other amateur electronics developers to engage in out of certain products, not the circuit is too plicated, that function is too simple and can easily be copied. The reason may be stuck in the product did not use a microcontroller or other programmable logic device。s CD4000 series of these pure hardware buttoned, then the circuit must be a large PCB board! But if the United States if the 7039。 e 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 ponents。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 beings。s largest puter。 Currently, highend 32bit microcontroller clocked over 300MHz, the performance catching the mid9039。 SCM systems based on this system until now is still widely used。Singlechip Department： Information engineering professional ： Electronic science and technology Student id： 0841330019 translator： fengli Guiding teacher： lintiejun SCM is also known as microcontroller (Microcontroller Unit), monly used letters of the acronym MCU that it was first used in industrial control。 Are 8bit microcontroller early or4 bits. One of the most successful is the INTEL 8031, for a simple, reliable and good performance was a lot of praise. Then developed in 8031 out of MCS51 MCU Systems。 The traditional 8bit microcontroller performance have been the rapid increase capacity increase pared to 80 the number of times 。 SCM is more suitable than the specific processor used in embedded systems, so it was up to the application. In fact the number of SCM is the world39。 Personal puter will have a large number of SCM in the work。 SCM and the puter functions
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