工業(yè)領(lǐng)域串口通信速度慢是個(gè)比較突出的問題， 而 F T 2 4 5 B M 能夠進(jìn)行 US B和并行 I ／ O口之間的 協(xié)議轉(zhuǎn)換， 在一些條件下能夠取代串口． 介紹 F T 2 4 5 B M 芯片的工作原理和功能， 并給出基于 F T2 4 5 B M 的 US B接口電路的應(yīng)用設(shè)計(jì)和基于 8 9 c 5 2的匯編及 c 5 1 單片機(jī)源程序．
標(biāo)簽： 工業(yè)領(lǐng)域 串口通信 速度 比較
上傳時(shí)間： 2017-05-27
上傳用戶：kytqcool
距離分辨率 thrt0=1*pi/6 斜視角 angb=0.6*lamda/res_a 合成波束寬度 Rr=5000 目標(biāo)中心到航跡垂直距離 V=100 飛機(jī)的航速 Tp=1e-6 脈沖寬度 T=10e-3 脈沖周期 B=0.5*c/res_r 脈沖頻寬 Kr=B/Tp 頻率調(diào)制率 fc=c/lamda 載波頻率 Rx=Rr*tan(thrt0) 目標(biāo)區(qū)中心橫坐標(biāo) R0=Rr*sec(thrt0) 目標(biāo)區(qū)中x心距離 Lc0=1.0*angb*R0 正視有效積累長(zhǎng)度 Lc=Lc0*sec(thrt0) 斜視有效積累長(zhǎng)度 Tc=Lc/V 相干積累時(shí)間 wx=100 場(chǎng)景長(zhǎng)度
標(biāo)簽： lamda res_a thrt angb
上傳時(shí)間： 2017-06-22
上傳用戶：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.
標(biāo)簽： user-space can drivers perform
上傳時(shí)間： 2014-01-01
上傳用戶：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)
標(biāo)簽： problem following routine library
上傳時(shí)間： 2014-12-01
上傳用戶：changeboy
一款類似百度知道系統(tǒng)的問題解答系統(tǒng)，問題頁(yè)面自動(dòng)生成靜態(tài)網(wǎng)頁(yè)- M( ]- `+ X0 x 系統(tǒng)特色： + O$ U8 n- [ z# {/ E本系統(tǒng)結(jié)合了仿百度知道程序和仿新浪愛問程序的共同優(yōu)點(diǎn)，設(shè)計(jì)更加合理 6 X) H8 a5 t9 h& D6 e8 S9 p2 P 問題頁(yè)面實(shí)時(shí)生成靜態(tài)頁(yè)面，減少系統(tǒng)開銷，更利于搜索引擎的收錄 ! f5 U& N3 J+ B7 I" S完美使用系統(tǒng)緩存，減少數(shù)據(jù)庫(kù)讀取次數(shù) b T |, g1 v9 \" E* Z 完善的后臺(tái)管理功能 # u5 C: I- c$ P6 P( H9 S2 w支持問題的附件上傳 . U! K+ k ~) o 對(duì)搜索引擎的優(yōu)化：支持Keywords和Description頁(yè)面頭部標(biāo)簽的自定義 6 ^! h: m- U4 p( z# X支持 JS 代碼的問題調(diào)用 t8 E5 ]) b3 M8 x* z提供與動(dòng)網(wǎng)、oblog、動(dòng)易實(shí)現(xiàn)用戶整合的標(biāo)準(zhǔn)接口 ) {4 \ ` ]1 g1 F8 u
標(biāo)簽： 百度
上傳時(shí)間： 2013-11-28
上傳用戶：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
標(biāo)簽： learningMatlab 172 199 173
上傳時(shí)間： 2013-12-20
上傳用戶：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.
標(biāo)簽： metricmatlab 203 184 tr
上傳時(shí)間： 2017-07-29
上傳用戶：來(lái)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
標(biāo)簽： object-oriented and Advanced Patterns
上傳時(shí)間： 2013-12-04
上傳用戶：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.
標(biāo)簽： overwhelming Computing changing people
上傳時(shí)間： 2013-12-23
上傳用戶：epson850
本論文研究了開源路由器的實(shí)現(xiàn)方法，通過具體的實(shí)驗(yàn)在X O R P 上實(shí)現(xiàn)了R I P , O S P F , B G P 等一系列協(xié)議，在P A C K E T T R A C E R 上進(jìn)行了仿真，并對(duì)開源路由器進(jìn)行了性能評(píng)價(jià)。
標(biāo)簽： 開源路由器
上傳時(shí)間： 2015-02-21
上傳用戶：13666909595
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