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華碩電腦pcb設(shè)計規(guī)范，內(nèi)部資料，
PCB Layout Rule Rev1.70, 規(guī)範(fàn)內(nèi)容如附件所示, 其中分為:
(1) ”PCB LAYOUT 基本規(guī)範(fàn)”:為R&D Layout時必須遵守的事項, 否則SMT,DIP,裁板時無法生產(chǎn).
(2) “錫偷LAYOUT RULE建議規(guī)範(fàn)”: 加適合的錫偷可降低短路及錫球.
(3) “PCB LAYOUT 建議規(guī)範(fàn)”:為製造單位為提高量產(chǎn)良率,建議R&D在design階段即加入PCB Layout.
(4) ”零件選用建議規(guī)範(fàn)”: Connector零件在未來應(yīng)用逐漸廣泛, 又是SMT生產(chǎn)時是偏移及置件不良的主因,故製造希望R&D及採購在購買異形零件時能顧慮製造的需求, 提高自動置件的比例.
(5) “零件包裝建議規(guī)範(fàn)”:,零件taping包裝時, taping的公差尺寸規(guī)範(fàn),以降低拋料率.
標(biāo)簽：
pcb
華碩電腦
設(shè)計規(guī)范
上傳時間：
2013-12-16
上傳用戶：奇奇奔奔
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編寫程序，用遞歸算法求輸出0至n（1<=n&&n>=9）的所有路徑。
標(biāo)簽：
編寫
程序
上傳時間：
2017-01-27
上傳用戶：gonuiln
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響鈴，如果輸入為N則響鈴N次，否則不會響鈴
標(biāo)簽：
上傳時間：
2014-01-22
上傳用戶：宋桃子
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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
上傳時間：
2017-02-19
上傳用戶：wyc199288
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The Bit Array structure provides a compacted arrays of Booleans, with one bit for each Boolean value. A 0 [1] bit corresponds to the Boolean value false [true], respectively. We can look at a stream of bytes as a stream of bits each byte contains 8 bits, so any n bytes hold n*8 bits. And the operation to manipulate this stream or bits array is so easy, jut read or change the bits state or make any Boolean operation on the whole bits array, like 鈥楢ND鈥? 鈥極R鈥? or 鈥榅OR鈥?
標(biāo)簽：
structure
compacted
Booleans
provides
上傳時間：
2014-01-15
上傳用戶：壞天使kk
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為了開發(fā)出適用于各種無線通信網(wǎng)絡(luò)的應(yīng)用和業(yè)務(wù)，人們通過不斷的努力，制定了一個業(yè)界的技術(shù)標(biāo)準(zhǔn)和規(guī)范，這就是無線應(yīng)用協(xié)議 [ WAP ]。無線應(yīng)用環(huán)境（Wireless ApplicationE n v i r o n m e n t，WA E）是WAP協(xié)議的一部分，它定義了各種無線終端，諸如移動電話、尋呼機和個人數(shù)字助理（P D A）上使用的應(yīng)用結(jié)構(gòu)。
標(biāo)簽：
無線通信網(wǎng)絡(luò)
上傳時間：
2017-03-13
上傳用戶：BIBI
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Measuring Frequency Content in
Signals
I this section we will study some non parametric methods for spectrum estimation
of a stochastic process. These methods are described in the literature.
All methods are based on the Periodogram which is defined for a sequence x[n]
with length N according to
標(biāo)簽：
parametric
Measuring
Frequency
Content
上傳時間：
2017-03-20
上傳用戶：秦莞爾w
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//建立頂級窗口
toplevel = XtVaAppInitialize[&app, "DrawArea", NULL, 0,
&argc, argv, NULL, NULL]
//建立drawarea
n = 0
XtSetArg[args[n], XmNwidth, 500 ] n++
XtSetArg[args[n], XmNheight, 500 ] n++
drawarea = XmCreateDrawingArea[toplevel, "drawarea", args, n]
XtManageChild[drawarea]
//建立繪圖所用的GC
prepare[]
標(biāo)簽：
NULL
XtVaAppInitialize
toplevel
DrawArea
上傳時間：
2013-12-29
上傳用戶：a6697238
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//建立頂級窗口
toplevel = XtVaAppInitialize[&app, "Frame", NULL, 0,
&argc, argv, NULL, NULL]
//建立Frame組件
n = 0
XtSetArg[args[n], XmNshadowType, XmSHADOW_ETCHED_IN] n++
XtSetArg[args[n], XmNshadowThickness, 4] n++
frame = XmCreateFrame[toplevel, "frame", args, n]
XtManageChild[frame]
標(biāo)簽：
NULL
XtVaAppInitialize
toplevel
Frame
上傳時間：
2013-12-08
上傳用戶：hasan2015
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//建立頂級窗口
toplevel = XtVaAppInitialize[&app, "Label", NULL, 0,
&argc, argv, NULL, NULL]
//建立按鈕上標(biāo)簽的字符串
str = XmStringCreateLtoR["A Simple\n Label",
XmFONTLIST_DEFAULT_TAG]
n = 0
XtSetArg[args[n], XmNlabelString, str] n++
label = XmCreateLabel[toplevel, "pushbutton", args, n]
XtManageChild[label]
XmStringFree[str]
//顯示窗口
XtRealizeWidget[toplevel]
//進(jìn)入事件循環(huán)
XtAppMainLoop[app]
標(biāo)簽：
NULL
XtVaAppInitialize
toplevel
Label
上傳時間：
2014-01-11
上傳用戶：bruce5996
