功能:本程序主要是讀出單個(gè)DS18B20芯片轉(zhuǎn)換后的溫度值,并把它轉(zhuǎn)換成BCD碼,范圍(-55℃~99℃)。
上傳時(shí)間: 2014-03-09
上傳用戶:guanliya
(1 . Higher Educati on Admissi on Committee Office of L ianyungang,L ianyungang 222006, China 2 . Modern Educati on Technique Center, Huaihai I nstitute of Technol ogy, L ianyungang 222005, China) Abstract: The outbreak ofARP cheating virus interferes with the nor mal functi oning of LAN. On the basis of thoroughly und standing of the p rinci p les, this paper analyzes the p rinci p les, pattern and classificati ons ofARP in details . And it also discu the tactics t o take strict p recauti ons ofARP fr om t wo sides— — —the administrati on ofLAN and Client Host . The pur pose of the cussi on is t o guarantee the normal running of LAN users . Key words: virus p rinci p les LAN client host
標(biāo)簽: ianyungang Committee Educati Admissi
上傳時(shí)間: 2013-12-23
上傳用戶:zhangyigenius
電子鬧鐘 clk: 標(biāo)準(zhǔn)時(shí)鐘信號,本例中,其頻率為4Hz; clk_1k: 產(chǎn)生鬧鈴音、報(bào)時(shí)音的時(shí)鐘信號,本例中其頻率為1024Hz; mode: 功能控制信號; 為0:計(jì)時(shí)功能; 為1:鬧鐘功能; 為2:手動校時(shí)功能; turn: 接按鍵,在手動校時(shí)功能時(shí),選擇是調(diào)整小時(shí),還是分鐘; 若長時(shí)間按住該鍵,還可使秒信號清零,用于精確調(diào)時(shí); change: 接按鍵,手動調(diào)整時(shí),每按一次,計(jì)數(shù)器加1; 如果長按,則連續(xù)快速加1,用于快速調(diào)時(shí)和定時(shí); hour,min,sec:此三信號分別輸出并顯示時(shí)、分、秒信號, 皆采用BCD 碼計(jì)數(shù),分別驅(qū)動6 個(gè)數(shù)碼管顯示時(shí)間; alert: 輸出到揚(yáng)聲器的信號,用于產(chǎn)生鬧鈴音和報(bào)時(shí)音; 鬧鈴音為持續(xù)20 秒的急促的“嘀嘀嘀”音,若按住“change”鍵, 則可屏蔽該音;整點(diǎn)報(bào)時(shí)音為“嘀嘀嘀嘀—嘟”四短一長音; LD_alert: 接發(fā)光二極管,指示是否設(shè)置了鬧鐘功能; LD_hour: 接發(fā)光二極管,指示當(dāng)前調(diào)整的是小時(shí)信號; LD_min: 接發(fā)光二極管,指示當(dāng)前調(diào)整的是分鐘信號
標(biāo)簽: clk 電子鬧鐘 標(biāo)準(zhǔn) 時(shí)鐘信號
上傳時(shí)間: 2017-01-02
上傳用戶:頂?shù)弥?/p>
--文件名:mine4.vhd。 --功能:實(shí)現(xiàn)4種常見波形正弦、三角、鋸齒、方波(A、B)的頻率、幅度可控輸出(方波 --A的占空比也是可控的),可以存儲任意波形特征數(shù)據(jù)并能重現(xiàn)該波形,還可完成 --各種波形的線形疊加輸出。 --說明: SSS(前三位)和SW信號控制4種常見波形種哪種波形輸出。4種波形的頻率、 --幅度(基準(zhǔn)幅度A)的調(diào)節(jié)均是通過up、down、set按鍵和4個(gè)BCD碼置入器以及一 --個(gè)置入檔位控制信號(ss)完成的(AMP的調(diào)節(jié)范圍是0~5V,調(diào)節(jié)量階為1/51V)。 --其中方波的幅度還可通過u0、d0調(diào)節(jié)輸出數(shù)據(jù)的歸一化幅值(AMP0)進(jìn)行進(jìn)一步 --細(xì)調(diào)(調(diào)節(jié)量階為1/(51*255)V)。方波A的占空比通過zu、zp按鍵調(diào)節(jié)(調(diào)節(jié) --量階1/64*T)。系統(tǒng)采用內(nèi)部存儲器——RAM實(shí)現(xiàn)任意輸入波形的存儲,程序只支 --持鍵盤式波形特征參數(shù)置入存儲,posting 為進(jìn)入任意波置入(set)、清除(clr)狀態(tài) --控制信號,SSS控制存儲波形的輸出。P180為預(yù)留端口,
上傳時(shí)間: 2017-02-09
上傳用戶:z1191176801
秒表的邏輯結(jié)構(gòu)比較簡單,它主要由、顯示譯碼器、分頻器、十進(jìn)制計(jì)數(shù)器、報(bào)警器和六進(jìn)制計(jì)數(shù)器組成。在整個(gè)秒表中最關(guān)鍵是如何獲得一個(gè)精確的100Hz計(jì)時(shí)脈沖,除此之外,整個(gè)秒表還需要一個(gè)啟動信號和一個(gè)歸零信號,以便能夠隨時(shí)啟動及停止。 秒表有六個(gè)輸出顯示,分別為百分之一秒,十分之一秒、秒、十秒、分、十分,所以共有6個(gè)計(jì)數(shù)器與之對應(yīng),6個(gè)個(gè)計(jì)數(shù)器全為BCD碼輸出,這樣便于同時(shí)顯示譯碼器的連接。當(dāng)計(jì)時(shí)達(dá)60分鐘后,蜂鳴器鳴響10聲。
上傳時(shí)間: 2017-02-10
上傳用戶:epson850
浮點(diǎn)數(shù)保存代碼,能區(qū)別代碼類別,代碼為壓縮BCD碼
標(biāo)簽: 浮點(diǎn)數(shù) 代碼
上傳時(shí)間: 2017-02-14
上傳用戶:大三三
This Program Cotains Eeprom Read-write functions, 4 Bit LCD interface routines, Keyboard Interface with normal Key Input to the 89C52 atmel Microcontroller.
標(biāo)簽: Read-write Interface functions interface
上傳時(shí)間: 2014-01-03
上傳用戶:jqy_china
DragonRaja Client source version 1.4+ this source allow players join in (Hades Warfield or Monsters warfield). When you compile in debug mode, it is GMtool. else compile in release mode, it is Normal player.
標(biāo)簽: source DragonRaja Warfield Monsters
上傳時(shí)間: 2014-01-25
上傳用戶:lxm
數(shù)據(jù)代碼轉(zhuǎn)換,包括二進(jìn)制到BCD碼的轉(zhuǎn)換,BCD碼到二進(jìn)制的轉(zhuǎn)換,等等。
標(biāo)簽: 數(shù)據(jù) 代碼轉(zhuǎn)換
上傳時(shí)間: 2014-10-28
上傳用戶:
The frequency domain plays an important role in image processing to smooth, enhance, and detect edges of images. Although image data typically does not include imaginary values, the fast Fourier transform (FFT) has been used for obtaining spectra. In this paper, the fast Hartley transform (FHT) is used to transform two-dimensional image data. Because the Hartley transform is real valued, it does not require complex operations. Both spectra and autocorrelations of two-dimensional ultrasound images of normal and abnormal livers were computed.
標(biāo)簽: processing frequency important enhance
上傳時(shí)間: 2014-01-08
上傳用戶:1051290259
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