单片机毕业参考英文文献及翻译

1、南京工程学院毕业设计说明书（论文）附录：英文技术资料翻译英文原文：Structure and function of the MCS-51 seriesStructure and function of the MCS-51 series one-chip computer MCS-51 is a name of a piece of one-chip computer series which Intel Company produces. This company introduced 8 top-grade one-chip computers of MCS-51 series in 1

2、980 after introducing 8 one-chip computers of MCS-48 series in 1976. It belong to a lot of kinds this line of one-chip computer the chips have,such as 8051,8031,8751,80C51BH, 80C31BH,etc., their basic composition, basic performance and instruction system are all the same. 8051 daily representatives-

3、 51 serial one-chip computers .An one-chip computer system is made up of several following parts: ( 1) One microprocessor of 8 (CPU). ( 2) At slice data memory RAM (128B/256B),it use not depositting not can reading /data that write, such as result not middle of operation, final result and data wante

4、d to show, etc. ( 3) Procedure memory ROM/EPROM (4KB/8KB ), is used to preserve the procedure , some initial data and form in slice. But does not take ROM/EPROMthin someone-chip computers, such as 8031 , 8032, 80C ,etc. ( 4) Four 8 run side by side I/O interface P0 four P3, each mouth can use as int

5、roduction , may use as exporting too.(5) Two timer / counter, each timer / counter may set up and count in the way, used to count to the external incident, can set up into a timing way too, and can according to count or result of timing realize the control of the computer. ( 6) Five cut off cutting

6、off the control system of the source .(7) One all duplexing serial I/O mouth of UART (universal asynchronous receiver/transmitter (UART) ), is it realize one-chip computer or one-chip computer and serial communication of computer to use for. ( 8) Stretch oscillator and clock produce circuit, quartz

7、crystal finely tune electriccapacity need outer. Allow oscillation frequency as 12 megahertas nowat most. Every the above-mentioned part was joined through the inside data bus .Among them, CPUis a core of the one-chip computer, it is the control of the computer and commancfcentre, madeup of such par

8、ts as arithmetic unit and controller , etc. The arithmetic unit can carry on 8 persons of arithmetic operation and unit ALU of logic operation while including one, the 1 storing device temporarilies of 8, storing device 2 temporarily, 8's accumulation deviceACC, register B and procedure state re

9、gister PSW,etc. Person who accumulate ACCbount by 2 input ends entered of checking etc. temporarily as one operation often, come from person who store 1 operation is it is it make operation to go on to count temporarily , operation result and loopback ACC with another one. In addition, ACC is often

10、regarded as the transfer station of data transmission on 8051 inside . The same as general microprocessor, it is the busiest register. Help remembering that agreeing with A expresses in the order. The controller includes the procedure counter , the order is depositted, the order decipher, the oscill

11、ator and timing circuit, etc. The procedure counter is madeup of counter of 8 for two, amounts to 16. It is a byte address counter of the procedure in fact, the content is the next IA that will carried out in PC. The content which changes it can change the direction that the procedure carries out .

12、Shake the circuit in 8051 one-chip computers, only need outer quartz crystal and frequency to finely tune the electriccapacity, itsfrequency range is its 12MHZ)f 1.2MHZ. This pulse signal, as 8051 basic beats of working, namely the minimum unit of time. 8051 is the same as other computers, the work

13、in harmony under the control of the basic beat, just like an orchestra according to the beat play that is commanded.There are ROM (procedure memory , can only read ) and RAM in 8051 slices (data memory, can is it can write ) two to read, they have each independent memory address space, dispose way t

14、o be the same with general memory of computer. Procedure 8051 memoryand 8751 slice procedure memorycapacity 4KB, address begin from 0000H, used for preserving the procedure and form constant. Data 8051- 8751 8031 of memorydata memory128B, address false 00FH, use for middle result to deposit operatio

15、n, the data are stored temporarily and the data are buffered etc. In RAMf this 128B, there is unit of 32 byteses that can be appointed as the job register, this and general microprocessor is different, 8051 slice RAM and job register rank one formation the same to arrange the location. It is not ver

16、y the samethat the memoryof MCS-51series one-chip computer and general computer disposes the way in addition. General computer for first address space, ROMnd RAMcan arrange in different space within the range of this address at will, namely the addresses of ROM and RAM,with distributing different ad

17、dress space in a formation. While visiting the memory, corresponding and only an address Memory unit, can ROM, it can be RAMtoo, and by visiting the order similarly. This kind of memorystructure is called the structure of Princeton. 8051 memories are divided into procedure memory space and data memo

18、ry space on the physics structure, there are four memoryspaces in all: The procedure stores in one and data memoryspace outside data memory and one in procedure memory space and one outside one, the structure forms of this kind of procedure device and data memory separated form data memory, called H

19、arvard structure. But use the angle from users, 8051 memory address space is divided into three kinds: (1) In the slice, arrange blocks of FFFFH , 0000H of location , in unison outside the slice (use 16 addresses). (2) The data memory address space outside one of 64KB, the address is arranged from 0

20、000H 64KB FFFFH (with 16 addresses ) too tothe location. (3) Data memoryaddress space of 256B (use 8 addresses). Three above-mentioned memory space addresses overlap, for distinguishing and designing the order symbol of different data transmission in the instruction system of 8051: CPUvisit slice, R

21、OMbrder spend MOVC visit block RAMrder uses MOVX outside the slice, RAM order uses MOV to visit in slice.8051 one-chip computer have four 8 walk abreast I/O port, call P0, P1, P2 and P3. Each port is 8 accurate two-way mouths, accounts for 32 pins altogether. Every one I/O line can be used as introd

22、uction and exported independently. Each port includes a latch (namely special function register ), one exports the driver and a introduction buffer . Make data can latch when outputting, data can buffer when making introduction , but four function of passway these self-same. Expand among the system

23、of memory outside having slice, four port these may serve as accurate two-way mouth of I/O in common use. Expand among the system of memory outside having slice, P2 mouth see high 8 address off; P0 mouth is a two-way bus, send the introduction of 8 low addresses and data / export in timesharing南京工程学

24、院毕业设计说明书（论文）Output grade , P3 of mouth , P1 of P1 , connect with inside have load resistance of drawing , every one of they can drive 4 Model LS TTL load to output. As while inputting the mouth, any TTL or NMOS circuit can drive P1 of 8051 one-chip computers as P3 mouth in a normal way . Because dra

25、w resistance on output grade of them have, can open a way collector too or drain-source resistance is it urge to open a way, do not need to have theresistance of drawing outerly . Mouths are all accurate two-way mouths too. When the conduct is input, must write the corresponding port latch with 1fir

26、st . As to 80C51 one-chip computer, port can only offer milliampere of output electric currents, is it output mouth go when urging one ordinary basing of transistor to regard as, should contact a resistance amongthe port and transistor base , in order to the electricity while restraining the high le

27、vel from exporting P1P3 Being restored to the throne is the operation of initializing of an one-chip computer. Its main function is to turn PC into0000H initially , make the one-chip computer begin to hold the conduct procedure from unit 0000H. Except that the ones that enter the system areinitializ

28、ed normally,as because procedure operate it makemistakes or operate there aren't mistake, in order to extricate oneself from a predicament , need to be pressed and restored to the throne the key restarting too. It is aninput end which is restored to the throne the signal in 8051 China RST pin. R

29、estore to the throne signal high level effective , should sustain 24 shake cycle (namely 2 machine cycles ) the above its effective times. If 6 of frequency of utilization brilliant to shake, restore to the throne signal duration should exceed 4 delicate to finish restoring to the throne and operati

30、ng. Produce the logic picture of circuit which is restored to the throne the signal:Restore to the throne the circuit and include two parts outside in the chip entirely. Outside that circuit produce to restore to the throne signal (RST) hand over to Schmitt's trigger, restore to the throne circu

31、it sample to output , Schmitt of trigger constantly in each S5P2 , machine of cycle inhaving one more , then just got and restored to the throne and operated the necessary signal insidly. Restore to the throne resistance of circuit generally, electric capacity parameter suitable for 6 brilliant to s

32、hake, can is it restore to the throne signal high level duration greater than 2 machine cycles to guarantee. Being restored to the throne in the circuit is simple, its function is very important. Pieces of one-chip computer system could normal running,should first check it can restore to the throne

33、not succeeding. Checking and can pop one's head and monitor the pin with the oscillograph tentatively, push and is restored to the throne the key, the wave form that observes and has enough range is exported (instantaneous), can also through is it restore to the throne circuit group holding valu

34、e carry on the experiment to change.注：文献来源中文译文：51系列单片机的功能和结构51系列单片机是Intel公司设计的单片机产品。这家公司丁 1976年推出8位MCS-4源列之后乂在1980年推出了 MCS-51系列单片机。它届丁这一类型很多行一 个芯片的电脑芯片都如 8051、8031、8751、80c51bh,80c31bh等，其基本组成、性能 和基本教学制度，都是一样的.8051通常是51系列的代表。每个单片机系统是由以下几个方面构成：(1)18微处理器(CPU). (2)片中内数据 存储器RAM(128B/256B冲如果结果不在操作过程中，结果也要

35、显示出来(3)存储器 存储程序/可擦写可编程只读存储器(4KB/8KB),用丁保存程序和数据，初步形成片. 但并不存储器/可擦写可编程只读存储器在一些人的电脑芯片，如8031、8032、80c 等.(4)四个8路运行的I/O 口，p0,p1,p2,p3,每个口既可用作输入也可用作出口(5)两个定时/计数器,每个计时器/计数器可设立不同计数方式，用来计数外部事件，可 以设置定时方式也可以和根据计算结果或定时控制实现控制计算(6)五个中断控制系统.(7) 一个全双工申行UART异步接收世界/发送(UART),它是实现一个计算机芯 片和一个计算机芯片之间通讯的一种申口 . (8)振荡器和时钟产生电路

36、，需要考虑石 英晶体微调能力，允许震荡平率位12MHZ上述每个部分都是通过片内数据总线连接。 其中CPia计算机芯片的核心，他是计算机的指挥中心，由算数单元和控制单元组 成算术单元可进行8位算术运算和逻辑运算，ALU单元是一种运算器，18个存储设 备，暂存设备进行存储协调，PS她累了两个输入端等检查时作为一个操作由人来操纵存储，另有一个操纵的结果回环协调。此外，协调往往是作为对8051的数据传输运转站考虑。作为一般的微处理器，他是最繁忙的。振荡器和定时器是由2个8位计数器组成，总位数为16位。这是一个字节的地址，其实是程序计数器，将在个 人电脑内部有运行，从而改变程序的运行顺序。在8051的电

37、路中，只需增加外部石英晶体和频率微调电容，这就保证计算机各部件的工作就像管弦乐队和谐工作。在8051中有ROM程序存储器，只能读取)和RAM教据存储器，可读可写)，他 们有各自独立的内存地址空间，也有相同的处理方式。8051和8751的程序存储器的存储容量为4K己地址从0000H开始，在使用过程中其中数据不变。8051,8751,8031 数据存储器的内存为128B,默认地址是00FH,用丁保存中间数据和缓存。在这128B 的内存中，有32byteses,被称作工作寄存器，和常用的微处理器不同的是，8051的RA虞按功能来划分模块的。MCS - 51系列单片机和和一般电脑的处理方式不同。 一般电脑会自动分配地址空间，RO陆日RAM勺计算机可以安排在不同的空间内，地址范围会根据ROhffi RAM勺位置分配不同的地址空间。在访问的内存，不管是ROMffiRAM只有一个地址对应一个内存单元，都