1、 中文 3234 字 本科生毕业设计（论文）专业外文翻译 原 文 ： PC and single chip microcomputer serial communication design 译 文 ： 关于 PC 机与单片机串行通信设计的实现 指导教师 ： 职称 ： 讲师 学生姓名 ： 学号 ： 专 业 ： 电气工程及其自动化 院（系） ： 2014 年 3 月 20 日 1 PC and single chip microcomputer serial communication design PC is the abbreviation of the Personal Computer,
2、 which can run independently, perform specific functions of the Personal Computer. Personal computer does not need to share other computer resources such as processing, disks and printer can work independently. 1. 1. PC development brief history According to the logic element process change, can be
3、divided into four stages: first generation: 1946-1958 is the vacuum tube computer. Its characteristic is that the big volume, power consumption, more slowly, but laid the foundation of computer technology. second generation: 1958-1964 is the transistor computer. Its characteristic is that the volume
4、 reduction, reduce power consumption, speed, cost reduction； third generation: 1964-1971 is the integrated circuit computer, than on the characteristics of the second generation of the third generation has a larger increase； fourth generation: mass of very large scale integrated circuit computer sin
5、ce 1971, it from large to tiny development, cost performance is greatly improved； The fifth generation computer will develop to is. 1.2. The PC hardware profile Hardware is running software platform, software control hardware work to complete the scheduled tasks. First of all, let us understand the
6、computer hardware. 1.2.1. Central processing unit (CPU) The CPU is the abbreviation of central processing unit (CPU), it is the core computer components. CPU chip mainly contain arithmetic unit and controller. unit Arithmetic unit is used for data arithmetic operation (addition, subtraction, multipl
7、ication, division, etc.) and logic operations (comparison, shift, Boolean calculation, etc.) of the device. Data from memory in the unit operation, operation result and sent to memory, these operations are carried out under the control of the controller. controller Controller is the command center o
8、f the computer, is used to control, accused the entire computer system automatically, continuously running and coordinated work between the parts. 2 Single chip microcomputer hereinafter referred to as single chip microcomputer, it is the central processing unit (CPU), memory (RAM and ROM), timer/co
9、unter, and all sorts of interface circuits are integrated into a integrated circuit chip microcomputer. With the development of computer technology, especially the single chip microcomputer technology, people have increasingly come to some industrial control system by single chip microcomputer testi
10、ng and control parameters such as temperature and humidity. PC machine has powerful monitoring and management functions, while MCU have the characteristics of fast and flexible control, through the PC RS 232 serial interface to communicate with external devices, is a kind of communication that is co
11、mmonly used in many measurement and control system solutions. So how to realize the communication between PC and single chip microcomputer has very important practical significance. For some remote control or risk is higher, the application of the data acquisition and control, this paper mainly intr
12、oduces a way of using duplex implementation of serial communication between PC and single chip microcomputer. Serial communication refers to the peripherals and computer use a data line between a a transmission of data, each data occupy a fixed length of time. Serial refers to the way of information
13、 transmission between peripherals and interface circuit, between CPU and interface is still working in parallel way. Serial data during transmission, due to the interference may cause error information. How to find errors in the transmission, error detection； After found errors, how to eliminate the
14、 error, error correction. (1) serial data transmission mode 1) double office way communication both sides can simultaneously send and receive operation. 2) only 1 half duplex mode transferring data signals, requiring communications sent and received by the electronic switch on both sides. Because there is only one channel, so the data cant transfer in both directions at the same time. 3) simplex mode allows only transmit data according to a fixed direction. (2) serial communication can be divided into two types: synchronous communication and asynchronous communication.
