7段数码是纯组合电路，通常的小规模专用IC，如74或4000系列的器件只能作十进制BCD码译码，然而数字系统中的数据处理和运算都是2进制的，所以输出表达都是16进制的，为了满足16进制数的译码显示，最方便的方法就是利用VHDL译码程序在FPGA或CPLD中实现。本项实验很容易实现这一目的。例6-1作为7段BCD码译码器的设计，输出信号LED7S的7位分别接如图6-1数码管的7个段，高位在左，低位在右。例如当LED7S输出为 "1101101" 时，数码管的7个段：g、f、e、d、c、b、a分别接1、1、0、1、1、0、1，接有高电平的段发亮，于是数码管显示“5”。
上传时间： 2014-01-08
上传用户：wff
Atheros无线芯片AR-6000系列wince 6驱动源代码(这东西我也没用过别问我,我是搜别的wince资源搜到的) AR6K SDIO support. Requires firmware 1.1 on SD13 cards. readme: Atheros Communications AR6001 WLAN Driver for SDIO installation Read Me March 26,2007 (based on k14 fw1.1) Windows CE Embedded CE 6.0 driver installation. 1. Unzip the installation file onto your system (called installation directory below) 2. Create an OS design or open an existing OS design in Platform Builder 6.0. a. The OS must support the SD bus driver and have an SD Host Controller driver (add these from Catalog Items). b. Run image size should be set to allow greater than 32MB. 3. a. From the Project menu select Add Existing Subproject... b. select AR6K_DRV.pbxml c. select open This should create a subproject within your OS Design project for the AR6K_DRV driver. 4. Build the solution. 转自Tony嵌入式,原文地址：http://www.cevx.com/bbs/dispbbs.asp?boardID=4&ID=11762&page=1
标签： wince Requires firmware Atheros
上传时间： 2014-11-11
上传用户：bibirnovis
Back in 2002, the 6502 disappeared out of all catalogues. Wanted to know, if it s possible to build a binary compatible CPU with the things I had in the drawer: 74LS parts, 27C512 EPROMs and a fast static RAM from an old 80386 motherboard. Now here the results. Note, that the Bus timing is different from the 6502.
标签： disappeared catalogues possible Wanted
上传时间： 2016-04-09
上传用户：hn891122
Swfdec still is development software, but has also followed a rigid no-crashes-allowed policy. I believe it s stable enough now to be installed as a default plugin for people that can live with occasional crashes of their browser. But don t blame me if it does crash. File a bug at https://bugs.freedesktop.org/enter_bug.cgi?product=swfdec
标签： no-crashes-allowed development followed software
上传时间： 2016-04-14
上传用户：franktu
1) Write a function reverse(A) which takes a matrix A of arbitrary dimensions as input and returns a matrix B consisting of the columns of A in reverse order. Thus for example, if A = 1 2 3 then B = 3 2 1 4 5 6 6 5 4 7 8 9 9 8 7 Write a main program to call reverse(A) for the matrix A = magic(5). Print to the screen both A and reverse(A). 2) Write a program which accepts an input k from the keyboard, and which prints out the smallest fibonacci number that is at least as large as k. The program should also print out its position in the fibonacci sequence. Here is a sample of input and output: Enter k>0: 100 144 is the smallest fibonacci number greater than or equal to 100. It is the 12th fibonacci number.
标签： dimensions arbitrary function reverse
上传时间： 2016-04-16
上传用户：waitingfy
北京大学ACM比赛题目 Consider an infinite full binary search tree (see the figure below), the numbers in the nodes are 1, 2, 3, .... In a subtree whose root node is X, we can get the minimum number in this subtree by repeating going down the left node until the last level, and we can also find the maximum number by going down the right node. Now you are given some queries as "What are the minimum and maximum numbers in the subtree whose root node is X?" Please try to find answers for there queries.
标签： the Consider infinite numbers
上传时间： 2013-12-16
上传用户：日光微澜
ATViewer is a component for Delphi/C++Builder, which allows to view files of various types. There is no edit possibility, just quick view - so it s useful to implement "View file" feature in your Delphi/C++Builder application. The following view modes are implemented: Text, Binary, Hex, Unicode: all files, of unlimited size. Plain file dump is shown. Used ATBinHex component: only visible part of file is loaded into memory. Modes are suitable for huge files and files of unknown type. RTF/UTF-8: RTF and UTF-8 encoded texts. File is shown using RichEdit control. Image: all general image formats: BMP JPG ICO GIF PNG... File is shown using ATImageBox component. Multimedia: all file types supported by MS Windows Media Player: AVI MPEG WMV MP3... File is shown using WMP ActiveX control. Internet: all file types supported by MS Internet Explorer: HTML XML DOC XLS... File is shown using MSIE ActiveX control. Plugins: all files supported by Total Commander Lister plugins.
标签： component ATViewer Builder various
上传时间： 2013-12-24
上传用户：小鹏
Implement the following integer methods: a) Method celsius returns the Celsius equivalent of a Fahrenheit calculation celsius = 5.0 / 9.0 * ( fahrenheit - 32 ) b) Method fahrenheit returns the Fahrenheit equivalent of a Celsius the calculation fahrenheit = 9.0 / 5.0 * celsius + 32 c) Use the methods from parts (a) and (b) to write an application either to enter a Fahrenheit temperature and display the Celsius or to enter a Celsius temperature and display the Fahrenheit equivalent.
标签： equivalent Implement the following
上传时间： 2014-01-19
上传用户：jackgao
segment,一个简单的中文分词程序，命令行如下： java -jar segmenter.jar [-b|-g|-8|-s|-t] inputfile.txt -b Big5, -g GB2312, -8 UTF-8, -s simp. chars, -t trad. chars Segmented text will be saved to inputfile.txt.seg
上传时间： 2014-01-04
上传用户：ynzfm
这是编译原理的一个实验, 是把一个正则表达式转化为不确定有穷自动机NFA的算法程序,朋兴趣的朋友可以下载来看看哦。 一个正则表达式就是由普通字符（例如字符 a 到 z）以及特殊字符（称为元字符）组成的文字模式。该模式描述在查找文字主体时匹配的一个或多个字符串。正则表达式作为一个模板，将某个字符模式与所搜索的字符串进行匹配。 本实例的符号包括： 1. 基本正则表达式, 如ab 2. 重复, 如a* 3. 在各项中选择, 如a|b 使用时在Convert的Reg Exp中点击输入正则表达式, 然后单击Convert->to NFA就可以了。
上传时间： 2016-06-22
上传用户：wangchong
