本文介紹了VHDL硬件描述語(yǔ)言基礎(chǔ),包括: 1.簡(jiǎn)介 2.基本結(jié)構(gòu) 3.基本數(shù)據(jù)類(lèi)型 4.設(shè)計(jì)組合電路 5.設(shè)計(jì)時(shí)序電路 6.設(shè)計(jì)狀態(tài)機(jī) 7.大規(guī)模電路的層次化設(shè)計(jì) 8.Function and Procedure
標(biāo)簽: VHDL 硬件描述語(yǔ)言
上傳時(shí)間: 2013-12-16
上傳用戶(hù):541657925
對(duì)PL0原編譯器進(jìn)行了以下的擴(kuò)充:1.增加以下保留字else(elsesym), for(forsym),to(tosym),downto(downtosym),return(returnsym),[(lmparen),](rmparen) 2.增加了以下的運(yùn)算符:+=(eplus),-=(eminus),++(dplus),--(dminus) 取址運(yùn)算符&(radsym),指向運(yùn)算符@(padsym) 3.修改單詞:修改不等號(hào)#為<> 4.擴(kuò)充語(yǔ)句:(1)增加了else子句 (2)增加了for語(yǔ)句 5.增加運(yùn)算:(1).++運(yùn)算 (2).--運(yùn)算;(3).+=運(yùn)算 (4).-=運(yùn)算;(5).&取址運(yùn)算; (6).@指向運(yùn)算; 6.增加類(lèi)型:(1).增加多維數(shù)組a[i1][i2][i3]……[i(n-1)][i(n-2)][in] (2).增加指針類(lèi)型(任何變量都能存放指針,但不支持指針的指針,如b:=@@a應(yīng)該改寫(xiě)為c:=@a,b:=@c) 7.將過(guò)程Procedure擴(kuò)展為函數(shù):(1).允許定義過(guò)程時(shí)在其后加參數(shù)(var a, var b,……..,var n) (2)允許通過(guò)指針向函數(shù)形式參數(shù)傳地址;(3)允許返回值;可以用 a:=p(a,b,c….,n) 返回
標(biāo)簽: downtosym returnsym elsesym downto
上傳時(shí)間: 2016-07-02
上傳用戶(hù):saharawalker
看n2實(shí)例 #Create a simulator object set ns [new Simulator] #Define different colors for data flows #$ns color 1 Blue #$ns color 2 Red #Open the nam trace file set nf [open out-1.nam w] $ns namtrace-all $nf set f0 [open out0.tr w] set f1 [open out1.tr w] #Define a finish Procedure proc finish {} { global ns nf $ns flush-trace #Close the trace file close $nf #Execute nam on the trace file exit 0 } #Create four nodes set n0 [$ns node] set n1 [$ns node] set n2 [$ns node] set n3 [$ns node] #Create links between the nodes $ns duplex-link $n0 $n2 1Mb 10ms
標(biāo)簽: simulator Simulator different Create
上傳時(shí)間: 2016-07-02
上傳用戶(hù):wfl_yy
MD5變換動(dòng)態(tài)鏈接庫(kù)文件調(diào)用:(delphi例子) ========================================================================= function transfer(tran:widestring):widestring stdcall external md5.dll name transfer //edit1為輸入字符,edit2為輸出md5摘要 Procedure TForm1.Button1Click(Sender: TObject) begin edit2.text:=transfer(edit1.Text) end
標(biāo)簽: delphi MD5 變換 動(dòng)態(tài)鏈接庫(kù)
上傳時(shí)間: 2016-07-04
上傳用戶(hù):lijianyu172
在內(nèi)存中的ADO記錄集與DataBinding 建立ADO連接 ADO Update concurrency的測(cè)試 Tandem Unstructured File 轉(zhuǎn)入Access資料庫(kù) 如何將其他資料匯入MDB檔 如同XBase的Macro Evaluation (&) 數(shù)據(jù)庫(kù)的鎖定 XBase與VB用法對(duì)照 RDO之Informix與VB的連線(xiàn) RDO 的建立結(jié)果集(一) RDO 的建立結(jié)果集(二) RDO 結(jié)果集之Isolation Level RDO 之Addnew/Update/Delete RDO Stored Procedure的呼叫 RDO rdoConnection物件的Events RDO之MultiResultset RDO之Blob資料的存取 RDO 放資料進(jìn)入MSFlexGrid VB5在處理數(shù)據(jù)庫(kù)時(shí)的幾個(gè)“BUG” 用VB5訪(fǎng)問(wèn)具有用戶(hù)級(jí)安全的Access97數(shù)據(jù)庫(kù) 與數(shù)據(jù)庫(kù)有關(guān)的問(wèn)答集
標(biāo)簽: ADO Unstructured DataBinding concurrency
上傳時(shí)間: 2016-09-23
上傳用戶(hù):bruce
原始數(shù)據(jù)以Kiwi格式存儲(chǔ)在GTBL.dat的二進(jìn)制文件中,具體的文件格式請(qǐng)參照ReveseTableFormat.xls 中的“逆引表格式”sheet.-this Procedure is the function of the navigation data of the road data collation, analysis. Kiwi to the original data stored in the format of the binary file GTBL.dat, specific file format ReveseTableFormat.xls Please refer to the "reverse primer format" sheet.
標(biāo)簽: Kiwi GTBL dat 數(shù)據(jù)
上傳時(shí)間: 2014-11-26
上傳用戶(hù):qweqweqwe
51單片機(jī)C語(yǔ)言多種點(diǎn)陣屏驅(qū)動(dòng)程序(開(kāi)發(fā)軟件為keil C ---8字點(diǎn)陣屏左移程序,64_16點(diǎn)陣屏驅(qū)動(dòng)程序,上移顯示程序,左移顯示程序)51 monolithic integrated circuit C language many kinds of lattice screen driver (develops the software is keil C ---8 character lattice screen left shift Procedure, the 64_16 lattice screen driver, uppers shift the display sequence, the left shift display sequence
標(biāo)簽: keil 點(diǎn)陣屏 51單片機(jī)C語(yǔ)言 開(kāi)發(fā)軟件
上傳時(shí)間: 2014-01-04
上傳用戶(hù):Ants
APCS,ARM 過(guò)程調(diào)用標(biāo)準(zhǔn)(ARM Procedure Call Standard),提供了緊湊的編寫(xiě)例程的一種機(jī)制,定義的例程可以與其他例程交織在一起。最顯著的一點(diǎn)是對(duì)這些例程來(lái)自哪里沒(méi)有明確的限制。它們可以編譯自 C、 Pascal、也可以是用匯編語(yǔ)言寫(xiě)成的。
標(biāo)簽: APCS
上傳時(shí)間: 2013-12-02
上傳用戶(hù):fandeshun
用C語(yǔ)言編的一個(gè)小解釋器,可以執(zhí)行C程序的!算是可以執(zhí)行C程序的C程序吧! 選自最新C語(yǔ)言精華(第三版)Herbert Schildt著 A small interpreter arranges which with the C language, may carry out the C Procedure! Is may carry out C the Procedure C Procedure! (Master) writes oh!
標(biāo)簽: C語(yǔ)言
上傳時(shí)間: 2013-12-20
上傳用戶(hù):kelimu
Input : A set S of planar points Output : A convex hull for S Step 1: If S contains no more than five points, use exhaustive searching to find the convex hull and return. Step 2: Find a median line perpendicular to the X-axis which divides S into SL and SR SL lies to the left of SR . Step 3: Recursively construct convex hulls for SL and SR. Denote these convex hulls by Hull(SL) and Hull(SR) respectively. Step 4: Apply the merging Procedure to merge Hull(SL) and Hull(SR) together to form a convex hull. Time complexity: T(n) = 2T(n/2) + O(n) = O(n log n)
標(biāo)簽: contains Output convex planar
上傳時(shí)間: 2017-02-19
上傳用戶(hù):wyc199288
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