简易数字频率计题解.( 1997年 B 题 ) 编写与讲解人:田良(东南大学无线电系,2003年3月12日) 一)任务 设计并制作一台数字显示的简易频率计。 (二)要求 1.基本要求 (1)频率测量 a.测量范围 信号:方波、正弦波 幅度:0.5V~5V[注] 频率:1Hz~1MHz b.测试误差≤0.1% (2)周期测量 a.测量范围 信号:方波、正弦波 幅度:0.5V~5V[注] 频率:1Hz~1MHz b.测试误差≤0.1% 3) 脉冲宽度测量 a.测量范围 信号:脉冲波 幅度:0.5V~5V[注] 脉冲宽度≥100μs b.测试误差≤0.1% (4)显示器 十进制数字显示,显示刷新时间1~10秒 连续可调,对上述三种测量功能分别采用不同颜色的 发光二极管指示。 (5)具有自校功能,时标信号频率为1MHz。 (6)自行设计并制作满足本设计任务要求的稳压电源
上传时间: 2013-12-26
上传用户:xg262122
%调用格式 =trapez_g( f_name ,a,b,n) %f_name: 被积函数的文件名f(x) % a:x的上限 % b:x的下限 % 部分区间数 %实例:trapez_g( sin ,0,pi,20)
上传时间: 2013-12-19
上传用户:cjl42111
Program main BIOS image | | /B - Program Boot Block | | /N - Program NVRAM | | /C - Destroy CMOS checksum | | /E - Program Embedded Controller Block | | /K - Program all non-critical blocks | | /Kn - Program n th non-critical block only(n=0-7) | | /Q - Silent execution | | /REBOOT - Reboot after programming | | /X - Don t Check ROM ID | | /S - Display current system s ROMID | | /Ln - Load CMOS defaults
标签: Program Destroy Block NVRAM
上传时间: 2016-07-26
上传用户:wfl_yy
采用3D Bresenham算法在两点间划一直线 % This program is ported to MATLAB from: % B.Pendleton. line3d - 3D Bresenham s (a 3D line drawing algorithm) % ftp://ftp.isc.org/pub/usenet/comp.sources.unix/volume26/line3d, 1992 % % Which is referenced by: % Fischer, J., A. del Rio (2004). A Fast Method for Applying Rigid % Transformations to Volume Data, WSCG2004 Conference. % http://wscg.zcu.cz/wscg2004/Papers_2004_Short/M19.pdf
标签: Bresenham Pendleton program MATLAB
上传时间: 2013-12-10
上传用户:sz_hjbf
计算机网络-系统方法 第三版 英文版 作 者: (美)彼德森(Peterson,L.L.) 等著 出 版 社: 机械工业出版社 出版时间: 2005-3-1 字 数: 版 次: 1 页 数: 813 印刷时间: 2005/03/01 开 本: 印 次: 纸 张: 胶版纸 I S B N : 9787111160564 包 装: 平装 所属分类: 图书 >> 计算机/网络 >> 计算机理论
上传时间: 2013-12-27
上传用户:weiwolkt
The "GEE! It s Simple" package illustrates Gaussian elimination with partial pivoting, which produces a factorization of P*A into the product L*U where P is a permutation matrix, and L and U are lower and upper triangular, respectively. The functions in this package are accurate, but they are far slower than their MATLAB equivalents (x=A\b, [L,U,p]=lu(A), and so on). They are presented here merely to illustrate and educate. "Real" production code should use backslash and lu, not this package.
标签: illustrates elimination Gaussian pivoting
上传时间: 2016-11-09
上传用户:wang5829
The "GEE! It s Simple" package illustrates Gaussian elimination with partial pivoting, which produces a factorization of P*A into the product L*U where P is a permutation matrix, and L and U are lower and upper triangular, respectively. The functions in this package are accurate, but they are far slower than their MATLAB equivalents (x=A\b, [L,U,p]=lu(A), and so on). They are presented here merely to illustrate and educate. "Real" production code should use backslash and lu, not this package.
标签: illustrates elimination Gaussian pivoting
上传时间: 2014-01-21
上传用户:lxm
Problem B:Longest Ordered Subsequence A numeric sequence of ai is ordered if a1 < a2 < ... < aN. Let the subsequence of the given numeric sequence (a1, a2, ..., aN) be any sequence (ai1, ai2, ..., aiK), where 1 <= i1 < i2 < ... < iK <= N. For example, sequence (1, 7, 3, 5, 9, 4, 8) has ordered subsequences, e. g., (1, 7), (3, 4, 8) and many others. All longest ordered subsequences are of length 4, e. g., (1, 3, 5, 8).
标签: Subsequence sequence Problem Longest
上传时间: 2016-12-08
上传用户:busterman
Data Structures and Algorithms with Object-Oriented Design Patterns in Java Bruno R. Preiss B.A.Sc., M.A.Sc., Ph.D., P.Eng. Associate Professor Department of Electrical and Computer Engineering University of Waterloo, Waterloo, Canada
标签: B.A.S R. Object-Oriented Algorithms
上传时间: 2017-03-07
上传用户:z754970244
设B是一个n×n棋盘,n=2k,(k=1,2,3,…)。用分治法设计一个算法,使得:用若干个L型条块可以覆盖住B的除一个特殊方格外的所有方格。其中,一个L型条块可以覆盖3个方格。且任意两个L型条块不能重叠覆盖棋盘。
标签:
上传时间: 2013-12-19
上传用户:xc216