利用Atmel公司的ATmega168微处理器，采用A/D转换方式来实现按摩椅控制器的键盘接口，通过在硬件电路中巧妙地选择电阻，在软件设计中采用数字滤波、二分法和区间鉴定等方法，灵敏可靠地实现了按摩椅中30个按键的处理。给出了硬件电路设计和软件设计思想以及部分汇编代码。 Abstract: This paper chooses A/D conversion method to realize the keyboard interface of the controller by using ATmega168 microchip from Atmel Company.It accomplishes 30-key dealing sensitively and reliably in massage chair through skillfully selecting resistors in hardware circuit and using digital filter,dichotomy and area-judging method in software design.The hardware design circuit, software design idea and partly assembles code are presented mainly.
上传时间： 2014-01-10
上传用户：咔乐坞
The μPSD32xx family, from ST, consists of Flash programmable system devices with a 8032 MicrocontrollerCore. Of these, the μPSD3234A and μPSD3254A are notable for having a complete implementationof the USB hardware directly on the chip, complying with the Universal Serial Bus Specification, Revision1.1.This application note describes a demonstration program that has been written for the DK3200 hardwaredemonstration kit (incorporating a μPSD3234A device). It gives the user an idea of how simple it is to workwith the device, using the HID class as a ready-made device driver for the USB connection.IN-APPLICATION-PROGRAMMING (IAP) AND IN-SYSTEM-PROGRAMMING (ISP)Since the μPSD contains two independent Flash memory arrays, the Micro Controller Unit (MCU) can executecode from one memory while erasing and programming the other. Product firmware updates in thefield can be reliably performed over any communication channel (such as CAN, Ethernet, UART, J1850)using this unique architecture. For In-Application-Programming (IAP), all code is updated through theMCU. The main advantage for the user is that the firmware can be updated remotely. The target applicationruns and takes care on its own program code and data memory.IAP is not the only method to program the firmware in μPSD devices. They can also be programmed usingIn-System-Programming (ISP). A IEEE1149.1-compliant JTAG interface is included on the μPSD. Withthis, the entire device can be rapidly programmed while soldered to the circuit board (Main Flash memory,Secondary Boot Flash memory, the PLD, and all configuration areas). This requires no MCU participation.The MCU is completely bypassed. So, the μPSD can be programmed or reprogrammed any time, anywhere, even when completely uncommitted.Both methods take place with the device in its normal hardware environment, soldered to a printed circuitboard. The IAP method cannot be used without previous use of ISP, because IAP utilizes a small amountof resident code to receive the service commands, and to perform the desired operations.
标签： Demonstration 3200 USB for
上传时间： 2014-02-27
上传用户：zhangzhenyu
The μPSD32xx family, from ST, consists of Flash programmable system devices with a 8032 Microcontroller Core. Of these, the μPSD3234A and μPSD3254A are notable for having a complete implementation of the USB hardware directly on the chip, complying with the Universal Serial Bus Specification, Revision 1.1.This application note describes a demonstration program that has been written for the DK3200 hardware demonstration kit (incorporating a μPSD3234A device). It gives the user an idea of how simple it is to work with the device, using the HID class as a ready-made device driver for the USB connection.
上传时间： 2014-04-03
上传用户：lizhizheng88
用单片机配置FPGA—PLD设计技巧 Configuration/Program Method for Altera Device Configure the FLEX Device You can use any Micro-Controller to configure the FLEX device–the main idea is clocking in ONE BITof configuration data per CLOCK–start from the BIT 0The total Configuration time–e.g. 10K10 need 15K byte configuration file•calculation equation–10K10* 1.5= 15Kbyte–configuration time for the file itself•15*1024*8*clock = 122,880Clock•assume the CLOCK is 4MHz•122,880*1/4Mhz=30.72msec
上传时间： 2013-10-09
上传用户：a67818601
Abstract: This design idea shows how you can design a simple wireless temperaturemonitoring
上传时间： 2013-10-25
上传用户：cicizoe
In this paper, we discuss efficient coding and design styles using verilog. This can beimmensely helpful for any digital designer initiating designs. Here, we address different problems rangingfrom RTL-Gate Level simulation mismatch to race conditions in writing behavioral models. All theseproblems are accompanied by an example to have a better idea, and these can be taken care off if thesecoding guidelines are followed. Discussion of all the techniques is beyond the scope of this paper, however,here we try to cover a few of them.
标签： Efficient Verilog Digital Coding
上传时间： 2013-11-23
上传用户：我干你啊
另一个使用java编写的加密通用算法包，含des,rsa,sha,md5,md4,md2,idea,blowfish等很多加密算法和密钥存储、签名等源码
上传时间： 2014-06-19
上传用户：chongcongying
多个加解密程序的说明与源程序，MD5,DES,idea,DSA.MARS,BOWFISH,TEA
上传时间： 2013-12-16
上传用户：dapangxie
使用VB写的加密算法库，包括Blowfish, idea, Triple DES (3DES), DES, DESE, Gost, Skipjack, TEA, Cast5, Serpent-128, Serpent-192, Serpent-256, Rijndael-128, Rijndael-192, Rijndael-256, RC2, RC4, and Twofish), six popular hash algorithms (SHA-1, SHA-256, MD2, MD4, MD5, and RipeMD), 还有 Huffman和Base64算法.
上传时间： 2014-12-21
上传用户：zhichenglu
多个加解密程序的说明与源程序，MD5,DES,idea,DSA.MARS,BOWFISH,TEA
上传时间： 2015-03-12
上传用户：cmc_68289287
