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Description: 这是非常有挑战性的题目。对于用户输入的任意一个平面函数f(x)，绘制出其函数曲线。这里最关键的技术难点就是如何实现计算表达式的值。在《编译原理》和《数据结构》的书中，都有对表达式运算方法的论述。说实在的，在编译型计算机语言中实现对用户输入表达式的运算是非常困难的。需要对表达式进行扫描，去括号，按照运算符的优先级生成2叉树，然后遍历该树生成逆波兰表达式，再然后通过栈的方法进行运算。如果在表达式中再包含有函数的话......描述起来都麻烦，更不要说用程序实现了:-(-This is a very challenging issue. For user input an arbitrary planar function f (x), mapping out its function curves. Here the most critical technical problems is how to achieve calculated the value of the expression. "Compiling Principle" and "data structure," the book, have right of expression Operational discussed. Indeed, the computer language compiler to achieve expression of the user input operation is very difficult. Need to scan expression to the brackets, in accordance with the priority Operators Generation 2-ary tree, and then traverse the tree generated reverse Polish expression, and then through the stack approach to computing. If the expression again contains the function described ...... these are trouble, not to mention the procedures used to achieve the
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Size: 68394 |
Author: vip |
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Description: 这是非常有挑战性的题目。对于用户输入的任意一个平面函数f(x)，绘制出其函数曲线。这里最关键的技术难点就是如何实现计算表达式的值。在《编译原理》和《数据结构》的书中，都有对表达式运算方法的论述。说实在的，在编译型计算机语言中实现对用户输入表达式的运算是非常困难的。需要对表达式进行扫描，去括号，按照运算符的优先级生成2叉树，然后遍历该树生成逆波兰表达式，再然后通过栈的方法进行运算。如果在表达式中再包含有函数的话......描述起来都麻烦，更不要说用程序实现了:-(-This is a very challenging issue. For user input an arbitrary planar function f (x), mapping out its function curves. Here the most critical technical problems is how to achieve calculated the value of the expression. "Compiling Principle" and "data structure," the book, have right of expression Operational discussed. Indeed, the computer language compiler to achieve expression of the user input operation is very difficult. Need to scan expression to the brackets, in accordance with the priority Operators Generation 2-ary tree, and then traverse the tree generated reverse Polish expression, and then through the stack approach to computing. If the expression again contains the function described ...... these are trouble, not to mention the procedures used to achieve the
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Size: 68608 |
Author: vip |
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Description: 从指定文件读入IP地址和帐号密码，猜测ftp服务器密码.-read from the specified file into the IP address and account password, guessing ftp server passwords.
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Size: 2048 |
Author: lby |
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Description: Author: Xavier Bresson (％ Last version: Aug 3, 2008
％ For more information: X. Bresson and T.F. Chan, "Fast Minimization of the Vectorial Total Variation Norm and Applications to Color Image
Processing", CAM Report 07-25-Author: Xavier Bresson ( Last version: Aug 3, 2008 For more information: X. Bresson and TF Chan, Fast Minimization of the Vectorial Total Variation Norm and Applications to Color ImageProcessing , CAM Report 07-25
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Size: 54272 |
Author: 代松 |
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Description: 数字音乐盒
（1） 硬件电路中用P1.0~P1.7控制按键，其中P1.0~P1.3扫描行，P1.4~P1.7扫描列。
（2） 用P0.0~P0.7，P2.0~P2.7控制LED,其中P0.0~P0.7控制七段码a,b,c,d,e,f,g,用P2.0~P2.7为数码管位选信号。
（3） 用，P2.0~P2.2作为LCD的RS,R/W,E的控制信号。用P0.0~P0.7作为LCD的D0~D7的控制信号。
（4） 用P3.7口控制蜂鸣器（J2,J4断开，J3短接）。
（5） 电路为12MHZ晶振频率工作，起振电路中C1,C2均为30pf。-Digital Music Box (1) hardware circuits using P1.0 ~ P1.7 control button, which P1.0 ~ P1.3 scan lines, P1.4 ~ P1.7 scan out. (2) by P0.0 ~ P0.7, P2.0 ~ P2.7 control LED, of which P0.0 ~ P0.7 Control Code paragraph a, b, c, d, e, f, g, with P2 .0 ~ P2.7 as a digital control bit selection signal. (3), P2.0 ~ P2.2 as the LCD of the RS, R/W, E of the control signal. P0.0 ~ P0.7 used as the LCD of the D0 ~ D7 of the control signal. (4) by P3.7 buzzer population control (J2, J4 disconnect, J3 shorted). (5) circuit for the crystal frequency of 12Mhz work, start-up circuit C1, C2 are 30pf.
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Size: 7168 |
Author: qwertyuii |
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Description: 一个简单的扫描器，可以用来扫面局域网内机器以及端口，不能突破防火墙-A simple scanner can be used to scanning machines, as well as LAN ports, can not break through a firewall
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Size: 78848 |
Author: dreamer |
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Description: 实现键盘扫描0-F，可以用来检测键盘的输入-The realization of the keyboard scan 0-F, can be used to detect keyboard input
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Size: 100352 |
Author: 强求 |
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Description: 用p1口与4×4键盘相接，横的是p10、p11、p12、p13，纵的扫描线是p14、p15、p16、p17
扫描结果是0,1,2,3,
4,5,6,7,
8,9,a,b,
c,d,e,f-I used p1 and 4 × 4 keyboard connected, Wang is the p10, p11, p12, p13, longitudinal scan line is p14, p15, p16, p17 scan is 0,1,2,3, 4,5,6 , 7, 8,9, a, b, c, d, e, f
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Size: 112640 |
Author: wu |
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Description:
本系统采用AT89S52为控制核心。该系统由4*4矩阵输入器、cpu部分以及通过8位数码管显示动态扫描0—F 16个数字。输入器由16个按键开关组成；cpu部分由51单片机、晶振片以及电容等组成；显示器由一个8位的7段译码管及电阻构成。
-The system uses AT89S52 as the control core. The system consists of 4* 4 matrix input device, cpu parts as well as through an 8-bit digital tube display dynamic scan 0-F 16 digits. Input is controlled by the composition of 16 key switches cpu in part by the 51 microcontroller, crystal pieces, as well as capacitors etc. display by an 8-bit 7-segment decoder tubes and resistors composition.
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Size: 19456 |
Author: 海峰 |
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Description: 运用顺序表的基本运算。（插入、删除）
1）集合的数据类型为一个结构体，其中包括一个数组用来存放集合元素，一个整型数据来统计集合元素的个数。生成两个集合A和B。
2）将集合中的元素按照从小到大排序。具体方法为：从第二个元素起(i)，依次扫描每个元素前面的所有元素（j），若i<j,则将j插在i的前面，结束对i的排序，照这个方法，再依次对i后的元素进行排序。
3）求两集合的并：生成一个新集合C，将集合A的元素复制过来，对集合B的元素依次进行扫描，若没有该元素，则插入，若已存在，则扫描下一个。求两集合的交：生成一个新的集合D，对于集合A中的每一个元素i，都对集合B中的所有元素都进行一次扫描，若B中有元素i，则将i插入到D中，若没有，则看集合A中的下一个元素。求两集合的差：生成两个新集合E和F，分别为两个集合之差集。E的元素为从集合A中除去两集合之交集D的元素，F的元素为从集合B中除去D的元素。-A collection of computing devices to use the order form the basic operations. (Insert, delete)
1) the type of data collection for a structure, including an array used to store a collection of elements, an integer data to statistics the number of elements in the collection. Generate two sets A and B.
2) In accordance with the elements of the collection from small to large order. Specific methods as follows: starting from the second element (i), followed by scanning all the elements in front of each element (j), if i <j, will be inserted in the i in front of j, to conclude i sort, according to this method , and then turn right after i sorted elements.
3) Find the two sets and: to generate a new set of C, will be copied elements of the collection A of elements of set B, in turn scan, if not the element, then insert, where they already exist, then scan the next one. Seeking two sets Attn: generate a new set of D, for the set A, each element of i, are all set B, all the elements to
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Size: 1024 |
Author: weiwei |
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Description: 用交叉串口线连接两块单片机进行双机通信，扫描到有键按下时，键值发送出去，另一块板收到后以0-F方式显示在数码管上。-With cross-serial cable to connect two pairs of aircraft communications microcontroller to scan that there are key is pressed, the key to send out another one after the board received 0-F are displayed in the digital pipe.
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Size: 1024 |
Author: 夏羽 |
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Description: 单片机 Keil＋proteus
并行口设计数字键盘实验
要求：掌握动态显示、动态扫描键盘的工作原理及硬、软件的设计、调试方法
掌握80C51接口硬件电路设计方法及软件编程方法
了解80C51外部中断的使用和编程方法
实验题目：并行口实现数字0~9、A~F、L、U、P、n总共20个键盘，将按键的结果用7段数码管显示出来。-Parallel Port numeric keypad test requirements: master the dynamic display, dynamic scan the keyboard works and the hardware and software design, debugging the means to acquire 80C51 interface hardware circuit design methods and software programming approach to understanding the 80C51 external interrupts use and programming methods Experimental subjects: parallel port for digital 0 ~ 9, A ~ F, L, U, P, n total of 20 keyboard, the result will be keys to use 7-segment digital tube display.
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Size: 47104 |
Author: ben202 |
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Description: JPEG 静态图像压缩
各文件功能说明如下：
1) JPEG压缩程序：gendat.exe
2) 为压缩后的数据加上JPEG文件头的程序genjpg.exe
3) 解JEPG压缩程序extrdat.exe
其中：（1）的输入参量是需要生成的压缩文件的名字。
主程序流程为：
a) 程序初始化，读取文件名称、原始图像数据等基本数据；
b) 从AC.TAB和DC.TAB两个文件生成AC表和DC表，存入数组
c) 以8×8为样本单位进行DCT变换
d) 以8×8为样本单位进行量化
e) 以8×8为样本单位进行Z形扫描
f) 以8×8为样本单位进行熵编码
g) 以8×8为样本单位进行解量化
h) 以8×8为样本单位进行IDCT变换
-JPEG still image compression
Function of the documents as follows:
1) JPEG compression process: gendat.exe
2) For the compressed JPEG file header data, together with the procedures genjpg.exe
3) The solution JEPG compression program extrdat.exe
Of which: (1) the input parameters is the need to generate the compressed file s name.
The main program flow is:
a) procedures for initialization, read the file name, the original image data and other basic data
b) From the AC.TAB and DC.TAB two file generation AC table and DC table, into an array of
c) with 8 × 8 sample units for the DCT-
d) to 8 × 8 for the sample unit to quantify
e) to 8 × 8 for the sample units of Z-scan
f) to 8 × 8 for the sample units of entropy coding
g) to 8 × 8 for the sample unit to extract the quantitative
h) with 8 × 8 for the sample units IDCT transform
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Size: 12288 |
Author: 太平洋 |
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Description: 单片机键盘扫描程序，4*4键盘，对应共阳极7段数码管输出0~F，延时函数用定时器中断方式。-MCU keyboard scanner, 4* 4 keyboard, corresponding to a total of anode 7-segment digital tube output of 0 ~ F, delay using timer interrupt function.
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Size: 11264 |
Author: wei mingzhe |
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Description: 利用中断定时器数值增益数码管动态扫描显示0到F ，-Using numerical gain of the digital control timer interrupt dynamic scan showed 0 to F,
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Size: 1024 |
Author: 陈明宇 |
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Description: 在51单片机中实现由4*4键盘控制7段数码管显示相应按键数值（0~F）。-Implemented in the microcontroller 51 from 4* 4 Keyboard control 7-segment display the corresponding key value (0 ~ F).
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Size: 1024 |
Author: 力生 |
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Description: region growing: Perform segmentation by region grow1ng.
[G, NR, SI, TI] = REGIONGROW(F, SR, T). Scan be an array (the same size as F) with a 1 at the coord1nates of every seed point and 0s elsewhere. S can also be a single seed value. Similarly, T can be an array (the same size as F) containing a threshold value for each pixel in F. T can also be a scalar, in wh1ch case it becomes a global threshold.
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Size: 1024 |
Author: Altaee |
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Description: 将8255 单元与键盘及数管显示单元连接，编写实验程序，扫描键盘输入，并将扫描结果
数 管显示。键盘采用4×4 键盘，每个数管显示可为0～F 共16 个数。实验具体内
如下：将键盘进行编号，记作0～F， 按下 中一个按键时，将该按键应的编号在一个数
管上显示出来， 再按下一个按键时，便将这个按键的编号在下一个数管上显示出来，数
管上可以显示近 4 次按下的按键编号。-The 8255 control unit with keyboard and number display unit connected, the preparation of experimental procedures, scanning keyboard input, and the number of scan tube display. 4 × 4 keyboard using the keyboard, LED display for each number 0 ~ F 16 number. Within specific experiments are as follows: the keyboard number, denoted by 0 ~ F, press one button, the button should be the number in a number displayed on the tube, and then press a button, put the number keys In the next few tube display, a number of tubes can be displayed nearly 4 times pressing the button number.
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Size: 32768 |
Author: jc_Wang |
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Description: DsPIC30F4011最小系统直接循环扫描驱动LED，4位8段数码管，数码管显示C,D,E,F-DsPIC30F4011 direct cycle minimum system scan driver LED, 4-bit 8 of the digital control, digital display C, D, E, F
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Size: 2048 |
Author: |
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Description: 实验内容：设计一个BCD码到LED的七段译码器 DICEDIS，非BCD值时仅G段亮（输出为一。然后下载验证键盘显示实验。接着改写程序，将1-6的数据固定地显示在1-6位数码管上。进而将F键功能改为换向键，即可以控制数字滚动显示的方向。
-Experiment: Design a BCD code to the LED seven segment decoder DICEDIS, non-BCD value G segment only bright (output is a. Then download keyboard display validation experiments. Then rewrite the program, the data will be permanently displayed 1-6 In the 1-6 digital tube. then changed the F key functions commutation button, you can control the digital scroll direction.
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Size: 445440 |
Author: 陈芳 |
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