外文翻译基于单片机的智能电风扇控制系统(外文原文+中文翻译)

外文原文

Single-chip microcomputer

1. the introduction of the singlechip microcomputer

The singlechip is one kind of integrated circuit chip, which uses the ultra large-scale technology and has the data-handling capacity (for example arithmetic operation, logic operation, data transfer, interrupt processing) the microprocessor (CPU), random access data-carrier storage (RAM), read-only program memory (ROM), input output circuit (I/O), possibly also includes fixed time the counter, serial passes unguardedly (SCI), demonstration actuation electric circuit (LCD or LED actuation electric circuit), pulse-duration modulation electric circuit (PWM), simulation multichannel switch and A/Electric circuit and so on D switch integrates to together the monolith chip on, constitutes to be smallest the computer system which however consummates. These electric circuits can under the software control accurate, be rapid, highly effective complete the procedure designer preset the duty. From this looked that, singlechip has the function which the microprocessor does not have, it may alone complete the intellectualization control function which the modern industry control requests, this is singlechip biggest characteristic. However singlechip also is different with the single trigger, the chip before the development, it only has the function greatly strengthened ultra large scale integrated circuit, if entrusts with it the specific procedure, it then is youngest, the integrity microcomputer control system, it (PC machine) has the essential difference with the single trigger or the personal computing, singlechip application belongs to the chip level application, needs the user to understand singlechip chip the structure and the command system as well as other integrated circuit application technologies and the system design need theory and technology, with such specific chip design application procedure, thus causes this chip to have the specific function.

The different singlechip has the different hardware characteristic and the software characteristic, namely their technical characteristic is different, the hardware characteristic is decided by singlechip chip internal structure, the user must use some kind of singlechip, must understand whether this product does satisfy the characteristic target which the need the function and the application system requests. Here technical characteristic including function characteristic, control characteristic and electrical specification and so on, these information needs to obtain from in theproduction merchant technical manual. The software characteristic is refers to the command system characteristic and the development support environment, the instruction characteristic is singlechip addressing way which we is familiar with, the data