本书曾被评为20世纪顶尖的30部计算机着作之一,作者Mark Allen Wei
上传时间： 2013-12-12
上传用户：xhz1993
DS18B20 ying yong de wen jian ben wen Wei asm format please use keil to open it
上传时间： 2015-06-25
上传用户：lps11188
AT91SAM7S64 SPI Slave mode with PDC sample code from Konrad.Wei
上传时间： 2014-01-04
上传用户：rocketrevenge
Author: Wei liu Summary: simulation of binary and non-binary bch decoder MATLAB Release: R14SP1 Required Products: Communications Toolbox Description: simulation of binary bch decoding algorithm for bch(n, k) with t bits error correction capability.
标签： simulation non-binary Summary Release
上传时间： 2014-01-10
上传用户：frank1234
数据结构和算法分析C语言版 E文原版by Mark Allen Wei
上传时间： 2016-01-31
上传用户：s363994250
yong 1602 yejing xian shi db15b20 de wen du ,mcu Wei 89s52.
上传时间： 2017-06-12
上传用户：gaome
Enhanced Audio Project by Dixie Xue & Wei Zhang
标签： Enhanced Project Audio Dixie
上传时间： 2013-12-24
上传用户：fredguo
Integrated EMI/Thermal Design forSwitching Power SuppliesWei ZhangThesis submitted to the Faculty of theVirginia Polytechnic Institute and State Universityin partial fulfillment of the requirements for the degree of Integrated EMI/Thermal Design forSwitching Power SuppliesWei Zhang(ABSTRACT)This work presents the modeling and analysis of EMI and thermal performancefor switch power supply by using the CAD tools. The methodology and design guidelinesare developed.By using a boost PFC circuit as an example, an equivalent circuit model is builtfor EMI noise prediction and analysis. The parasitic elements of circuit layout andcomponents are extracted analytically or by using CAD tools. Based on the model, circuitlayout and magnetic component design are modified to minimize circuit EMI. EMI filtercan be designed at an early stage without prototype implementation.In the second part, thermal analyses are conducted for the circuit by using thesoftware Flotherm, which includes the mechanism of conduction, convection andradiation. Thermal models are built for the components. Thermal performance of thecircuit and the temperature profile of components are predicted. Improved thermalmanagement and winding arrangement are investigated to reduce temperature.In the third part, several circuit layouts and inductor design examples are checkedfrom both the EMI and thermal point of view. Insightful information is obtained.
上传时间： 2013-11-10
上传用户：1595690
TLC2543是TI公司的12位串行模数转换器，使用开关电容逐次逼近技术完成A/D转换过程。由于是串行输入结构，能够节省51系列单片机I/O资源；且价格适中，分辨率较高，因此在仪器仪表中有较为广泛的应用。 TLC2543的特点 （1）12位分辩率A/D转换器； （2）在工作温度范围内10μs转换时间； （3）11个模拟输入通道； （4）3路内置自测试方式； （5）采样率为66kbps； （6）线性误差±1LSBmax； （7）有转换结束输出EOC； （8）具有单、双极性输出； （9）可编程的MSB或LSB前导； （10）可编程输出数据长度。 TLC2543的引脚排列及说明 TLC2543有两种封装形式：DB、DW或N封装以及FN封装，这两种封装的引脚排列如图1，引脚说明见表1 TLC2543电路图和程序欣赏 #include<reg52.h> #include<intrins.h> #define uchar unsigned char #define uint unsigned int sbit clock=P1^0; sbit d_in=P1^1; sbit d_out=P1^2; sbit _cs=P1^3; uchar a1,b1,c1,d1; float sum,sum1; double sum_final1; double sum_final; uchar duan[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; uchar Wei[]={0xf7,0xfb,0xfd,0xfe}; void delay(unsigned char b) //50us { unsigned char a; for(;b>0;b--) for(a=22;a>0;a--); } void display(uchar a,uchar b,uchar c,uchar d) { P0=duan[a]|0x80; P2=Wei[0]; delay(5); P2=0xff; P0=duan[b]; P2=Wei[1]; delay(5); P2=0xff; P0=duan[c]; P2=Wei[2]; delay(5); P2=0xff; P0=duan[d]; P2=Wei[3]; delay(5); P2=0xff; } uint read(uchar port) { uchar i,al=0,ah=0; unsigned long ad; clock=0; _cs=0; port<<=4; for(i=0;i<4;i++) { d_in=port&0x80; clock=1; clock=0; port<<=1; } d_in=0; for(i=0;i<8;i++) { clock=1; clock=0; } _cs=1; delay(5); _cs=0; for(i=0;i<4;i++) { clock=1; ah<<=1; if(d_out)ah|=0x01; clock=0; } for(i=0;i<8;i++) { clock=1; al<<=1; if(d_out) al|=0x01; clock=0; } _cs=1; ad=(uint)ah; ad<<=8; ad|=al; return(ad); } void main() { uchar j; sum=0;sum1=0; sum_final=0; sum_final1=0; while(1) { for(j=0;j<128;j++) { sum1+=read(1); display(a1,b1,c1,d1); } sum=sum1/128; sum1=0; sum_final1=(sum/4095)*5; sum_final=sum_final1*1000; a1=(int)sum_final/1000; b1=(int)sum_final%1000/100; c1=(int)sum_final%1000%100/10; d1=(int)sum_final%10; display(a1,b1,c1,d1); } }
上传时间： 2013-11-19
上传用户：shen1230
CAN与RS232转换节点的设计与实现 介绍将CAN总线接口与RS232总线接口相互转换的设计方法和2种总线电平转换关系，实现CAN总线与各模块的接口设计，制定了相应的软硬件设计方案，并给出软件设计流程图以及部分硬件设计原理图。为CAN总线与RS232总线互联提供了一种方法，对CAN总线与RS232总线接口设备的互联和广泛应用的实现具有重要意义。关键词：CAN总线；RS-232总线；串行通信Design and Realization of CAN and RS232 Transformation NodeZHOU Wei, CHENG Xiao-hong(Information Institute, Wuhan University of Technology, Wuhan 430070)【Abstract】This paper introduces one design method of the CAN bus interface and the RS232 bus interface interconversion, emphasizes two kindof bus level transformation relations, realizes the CAN bus and various modules connection design, formulates the design proposal of correspondingsoftware and hardware, and gives the flow chart of software design as well as the partial schematic diagram of hardware design. It providesonemethod for the CAN bus and the RS232 bus interconnection, has the vital significance to widespread application realization of the CAN busand theRS232 bus interface equipment interconnection.【Key words】CAN bus; RS-232 bus; serial communication
上传时间： 2013-11-04
上传用户：leesuper
