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MFRC500_cn
MF RC522是应用于13.56MHz非接触式通信中高集成度的读写卡芯片,是NXP公司针对“三表”应用推出的一款低电压、低成本、体积小的非接触式读写卡芯片,是智能仪表和便携式手持设备研发的较好选择。
MF RC522利用了先进的调制和解调概念,完全集成了在13.56MHz下所有类型的被动非接触式通信方式和协议。支持ISO14443A兼容应答器信号。数字部分处理ISO14443A帧和错误检测。此外,还支持快速CRYPTO1加密算法,用语验证MIFARE系列产品。MFRC522支持MIFARE系列更高速的非接触式通信,双向数据传输速率高达424kbit/s。
作为13.56MHz高集成度读写卡系列芯片家族的新成员,MF RC522与MF RC500和MF RC530有不少相似之处,同时也具备许多特点和差异。它与主机间通信采用连线较少的串行通信,且可根据不同的用户需求,选取SPI、IIC或串行UART模式之一,有利于减少连线,缩小PCB板体积,降低成本。 (asdfasdf asdf )
- 2009-06-09 10:39:04下载
- 积分:1
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a
说明: 用遗传算法解决旅行商问题(附源代码),遗传算法其实是一种求函数极值的随机搜索算法。(Solving the traveling salesman problem using genetic algorithms (with source code), genetic algorithm is a kind of extreme demand function of random search algorithm.)
- 2011-05-11 17:43:08下载
- 积分:1
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DoubleStack
数据结构基础内容,两栈共享空间,参考《大话数据结构》(Structural basis of data content, two stacks shared space, refer to Westward data structure )
- 2014-12-06 12:09:30下载
- 积分:1
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15
说明: 嵌入式实时操作系统μCOS-Ⅱ经典实例——基于STM32处理器-光盘资料(The classic example of embedded real-time operating system μCOS-Ⅱ- based on the the STM32 processor- CD-ROM)
- 2013-01-30 14:24:53下载
- 积分:1
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fircheb
matlab fir chebshev LPF
- 2013-11-21 21:36:36下载
- 积分:1
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HuffmanTree
该系统应具有以下功能:
(1) I:初始化(Initialization)。从终端读入字符集大小n,以及n个字符和n个权值,建立哈夫曼树,并将它存于文件hfmTree中。
(2) E:编码(Encoding)。利用已建好的哈夫曼树(如不在内存,则从文件hfmTree中读入),对文件ToBeTran中的正文进行编码,然后将结果存入文件CodeFile中。
(3) D:译码(Decoding)。利用已建好的哈夫曼树将文件CodeFile中的代码进行译码,结果存入文件TextFile中。
(4) P:打印代码文件(Print)。将文件CodeFile以紧凑格式显示在终端上,每行50个代码。同时将此字符形式的编码文件写入文件CodePrin中。
(5) T:打印哈夫曼树(Tree printing)。将已在 中的哈夫曼树以直观的方式(树或凹入表形式)显示在终端上,同时将此字符形式的哈夫曼树写入文件TreePrint中。
(The system should have the following features: (1) I: initialization (Initialization). Read from the terminal character set size n, and n and n characters right value, establishes a Huffman tree, and save it in the file hfmTree in. (2) E: encoding (Encoding). Has been built using the Huffman tree (if not in memory, reads from the file hfmTree), the text of the document ToBeTran encoded, and then putting the result in the CodeFile file. (3) D: decoding (Decoding). Huffman tree has been built using the file CodeFile the code will be decoded, the result is stored in the file TextFile. (4) P: Printing code files (Print). CodeFile in a compact format the document displayed on the terminal, one per line 50 code. While this character in the form of written documents CodePrin encoded file in. (5) T: Print Huffman tree (Tree printing). Would have been in the Huffman tree in an intuitive way (tree or recessed table form) displayed on the terminal, but this form of characters written to the file )
- 2013-06-21 13:45:16下载
- 积分:1
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ThreeView
三视图,用二维图像显示三位图像,分主视图,俯视图,侧视图(view)
- 2020-11-30 09:29:34下载
- 积分:1
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Program-controlled_voltage_and_current_sources
通过单片机按键选择输出信号类型及要求输出量,在LED显示器件上指示信号类型及设定数值.系统工作电源±15V , ±5V 。恒流电流输出0.0~8.0mA, 负载电阻≤500Ω。3. 稳压电压输出0.0~5.0V,电流负载能力≤100mA.电压及电流输出在充许负载范围内误差小于5%FS。电压及电流输出须共用一个输出正端, 输出负端为地。输出电压及电流设定精确到二位十进制数。
(Through Singlechip button to choose the type and requirements of the output signal output, in the LED display on the instructions of the signal type and set the value. System power supply ± 15V, ± 5V. Constant current output 0.0 ~ 8.0mA, the load resistance ≤ 500Ω. 3. Regulator output voltage 0.0 ~ 5.0V, current load capacity ≤ 100mA. Voltage and current output in the framework allow the load error is less than 5 FS. Output voltage and current output is required to share a client, the output of negative side for the land. Output voltage and current settings accurate to two decimal number.)
- 2008-04-27 12:47:49下载
- 积分:1
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erchashu
平衡二叉树操作,可以输入数字形成二叉树,可以进行添加、删除操作(Balanced binary tree operation, you can enter numbers to form a binary tree, the user can add, delete)
- 2011-12-23 10:26:26下载
- 积分:1
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VC_show
说明: 用VC开发的界面程序,显示工业控制数据和状态信息(show the data and the status information of insustry control)
- 2010-04-26 21:37:19下载
- 积分:1