工业领域串口通信速度慢是个比较突出的问题， 而 F T 2 4 5 B M 能够进行 US B和并行 I ／ O口之间的 协议转换， 在一些条件下能够取代串口． 介绍 F T 2 4 5 B M 芯片的工作原理和功能， 并给出基于 F T2 4 5 B M 的 US B接口电路的应用设计和基于 8 9 c 5 2的汇编及 c 5 1 单片机源程序．
上传时间： 2017-05-27
上传用户：kytqcool
距离分辨率 thrt0=1*pi/6 斜视角 angb=0.6*lamda/res_a 合成波束宽度 Rr=5000 目标中心到航迹垂直距离 V=100 飞机的航速 Tp=1e-6 脉冲宽度 T=10e-3 脉冲周期 B=0.5*c/res_r 脉冲频宽 Kr=B/Tp 频率调制率 fc=c/lamda 载波频率 Rx=Rr*tan(thrt0) 目标区中心横坐标 R0=Rr*sec(thrt0) 目标区中x心距离 Lc0=1.0*angb*R0 正视有效积累长度 Lc=Lc0*sec(thrt0) 斜视有效积累长度 Tc=Lc/V 相干积累时间 wx=100 场景长度
上传时间： 2017-06-22
上传用户：haohaoxuexi
A user-space device driver can do many of the things that kernel drivers can t, such as perform a long-running computation, block while waiting for an event, or read files from the file system. Unlike kernel drivers, a user-space device driver can use other device drivers--that is, access the network, talk to a serial port, get interactive input from the user, pop up GUI windows, or read from disks. User-space drivers implemented using FUSD can be much easier to debug it is impossible for them to crash the machine, are easily traceable using tools such as gdb, and can be killed and restarted without rebooting even if they become corrupted. FUSD drivers don t have to be in C--Perl, Python, or any other language that knows how to read from and write to a file descriptor can work with FUSD. User-space drivers can be swapped out, whereas kernel drivers lock physical memory.
标签： user-space can drivers perform
上传时间： 2014-01-01
上传用户：saharawalker
This routine calls the glpk library to solve a LP/MIP problem. A typical LP problem has following structure: [min|max] C x s.t. Ax ["="|"<="|">="] b {x <= UB} {x >= LB} The calling syntax is: [XMIN,FMIN,STATUS,EXTRA]=glpkmex(SENSE,C,A,B,CTYPE,LB,UB,... VARTYPE,PARAM,LPSOLVER,SAVE)
标签： problem following routine library
上传时间： 2014-12-01
上传用户：changeboy
一款类似百度知道系统的问题解答系统，问题页面自动生成静态网页- M( ]- `+ X0 x 系统特色： + O$ U8 n- [ z# {/ E本系统结合了仿百度知道程序和仿新浪爱问程序的共同优点，设计更加合理 6 X) H8 a5 t9 h& D6 e8 S9 p2 P 问题页面实时生成静态页面，减少系统开销，更利于搜索引擎的收录 ! f5 U& N3 J+ B7 I" S完美使用系统缓存，减少数据库读取次数 b T |, g1 v9 \" E* Z 完善的后台管理功能 # u5 C: I- c$ P6 P( H9 S2 w支持问题的附件上传 . U! K+ k ~) o 对搜索引擎的优化：支持Keywords和Description页面头部标签的自定义 6 ^! h: m- U4 p( z# X支持 JS 代码的问题调用 t8 E5 ]) b3 M8 x* z提供与动网、oblog、动易实现用户整合的标准接口 ) {4 \ ` ]1 g1 F8 u
标签： 百度
上传时间： 2013-11-28
上传用户：ztj182002
learningMatlab PhÇ n 1 c¬ së Mat lab Ch ¬ ng 1: Cµ i ® Æ t matlab 1.1.Cµ i ® Æ t ch ¬ ng tr×nh: Qui tr×nh cµ i ® Æ t Matlab còng t ¬ ng tù nh viÖ c cµ i ® Æ t c¸ c ch ¬ ng tr×nh phÇ n mÒ m kh¸ c, chØ cÇ n theo c¸ c h íng dÉ n vµ bæ xung thª m c¸ c th« ng sè cho phï hî p. 1.1.1 Khë i ® éng windows. 1.1.2 Do ch ¬ ng tr×nh ® î c cÊ u h×nh theo Autorun nª n khi g¾ n dÜ a CD vµ o æ ® Ü a th× ch ¬ ng tr×nh tù ho¹ t ® éng, cö a sæ
标签： learningMatlab 172 199 173
上传时间： 2013-12-20
上传用户：lanwei
metricmatlab ch ¬ ng 4 Ma trË n - c¸ c phÐ p to¸ n vÒ ma trË n. 4.1 Kh¸ i niÖ m: - Trong MATLAB d÷ liÖ u ® Ó ® a vµ o xö lý d íi d¹ ng ma trË n. - Ma trË n A cã n hµ ng, m cét ® î c gä i lµ ma trË n cì n m. § î c ký hiÖ u An m - PhÇ n tö aij cñ a ma trË n An m lµ phÇ n tö n» m ë hµ ng thø i, cét j . - Ma trË n ® ¬ n ( sè ® ¬ n lÎ ) lµ ma trË n 1 hµ ng 1 cét. - Ma trË n hµ ng ( 1 m ) sè liÖ u ® î c bè trÝ trª n mét hµ ng. a11 a12 a13 ... a1m - Ma trË n cét ( n 1) sè liÖ u ® î c bè trÝ trª n 1 cét.
标签： metricmatlab 203 184 tr
上传时间： 2017-07-29
上传用户：来茴
PHP 5 Advanced OOP and Design Patterns “I made up the term ‘object-oriented,’ and I can tell you I didn’t have C++ in mind.”—Alan Kay, OOPSLA ’97
标签： object-oriented and Advanced Patterns
上传时间： 2013-12-04
上传用户：zhliu007
Computing and the way people use C for doing it keeps changing as years go by. So overwhelming has been the response to all the previous editions of “Let Us C” that I have now decided that each year I would come up with a new edition of it so that I can keep the readers abreast with the way C is being used at that point in time.
标签： overwhelming Computing changing people
上传时间： 2013-12-23
上传用户：epson850
本论文研究了开源路由器的实现方法，通过具体的实验在X O R P 上实现了R I P , O S P F , B G P 等一系列协议，在P A C K E T T R A C E R 上进行了仿真，并对开源路由器进行了性能评价。
标签： 开源路由器
上传时间： 2015-02-21
上传用户：13666909595
