8051 monitor programm: - use external ram to run user program - use eeprom to save user program - provide single step debug, can read internal register and ram
上传时间： 2015-07-11
上传用户：zhichenglu
county, random population coordinates were generated using the complete spatial randomness (CSR) function in S-PLUS. Then, the background information was attached to each individual county based on the county?s distribution for the class of interest. Finally, all counties were merged into a single dataset that describes the whole state
标签： coordinates population randomness generated
上传时间： 2014-01-18
上传用户：hn891122
用C51实现的拼音输入法,这是改写的网友 embuffalo、独步上载在www.21ic.com自由发布区的由张凯原作的51上的拼音输入法程序。 原作使用了一个二维数组用以查表，我认为这样比较的浪费空间，而且每个字表的索引地址要手工输入，效率不高。所以我用结构体将其改写了一下。就是大家现在看到的这个。 因为代码比较的大，共有6,000多汉字，这样就得要12,000 byte来存放GB内码，所以也是没办法的 :-( 编译结果约为3000h,因为大部分是索引表，代码优化几乎无效。 在Keil C里仿真芯片选用的是华邦的W77E58，它有32k ROM, 256B on-chip RAM, 1K on-chip SRAM (用DPTR1指针寻址,相当于有1K的片上xdata)。条件有限，没有上片试验，仿真而已。 打算将其移植到AVR上，但CodeAVRC与IAR EC++在结构体、指针的定义使用上似乎与C51不太一样，现在还未搞定。还希望在这方面有经验的网友能给予指导。
上传时间： 2014-01-26
上传用户：semi1981
关于FPGA流水线设计的论文 This work investigates the use of very deep pipelines for implementing circuits in FPGAs, where each pipeline stage is limited to a single FPGA logic element (LE). The architecture and VHDL design of a parameterized integer array multiplier is presented and also an IEEE 754 compliant 32-bit floating-point multiplier. We show how to write VHDL cells that implement such approach, and how the array multiplier architecture was adapted. Synthesis and simulation were performed for Altera Apex20KE devices, although the VHDL code should be portable to other devices. For this family, a 16 bit integer multiplier achieves a frequency of 266MHz, while the floating point unit reaches 235MHz, performing 235 MFLOPS in an FPGA. Additional cells are inserted to synchronize data, what imposes significant area penalties. This and other considerations to apply the technique in real designs are also addressed.
标签： investigates implementing pipelines circuits
上传时间： 2015-07-26
上传用户：CHINA526
unicap provides an uniform access to video capture devices. Currently you can access v4l, v4l2, IIDC 1394 ( DCAM ) cameras and video to firewire converters with a single API. New devices can be added via a plugin system
标签： access Currently provides capture
上传时间： 2015-08-07
上传用户：cjl42111
ARM7硬件说明与开发 The ARM7 is a low-power, general purpose 32-bit RISC microprocessor macrocell for use in application or customer-specific integrated circuts (ASICs or CSICs). Its simple, elegant and fully static design is particularly suitable for cost and power-sensitive applications. The ARM7’s small die size makes it ideal for integrating into a larger custom chip that could also contain RAM, ROM, logic, DSP and other cells.
标签： ARM7 microprocessor low-power macrocell
上传时间： 2013-12-17
上传用户：3到15
linux下的SPI总线驱动程序，CPU是RTL的86系列，以legerity的SLIC chip为驱动对象。供大家参考。
上传时间： 2014-12-02
上传用户：z1191176801
A complete set of bit banged, software driven I2C routines I created for any PIC device - and they work!! These functions are single master only functions, and are ideal for communicating with things like EEPROMs, LCD Drivers, ADC Converters etc
标签： complete routines software created
上传时间： 2013-12-17
上传用户：王小奇
/* Check_SST_39VF400A Check manufacturer and device ID /* CFI_Query CFI Query Entry/Exit command sequence /* Erase_One_Sector Erase a sector of 2048 words /* Erase_One_Block Erase a block of 32K words /* Erase_Entire_Chip Erase the contents of the entire chip /* Program_One_Word Alter data in one word /* Program_One_Sector Alter data in 2048 word sector /* Program_One_Block Alter data in 32K word block
标签： manufacturer Check_SST CFI_Query command
上传时间： 2013-12-15
上传用户：jjj0202
Introduction to the MSN Messenger Activity SDK --- --- --- --- --- --- --- --- --- --- --- --- --- -- The MSN® Messenger Activity software development kit (SDK) contains technical information about how to develop and test single-user and multiuser applications by using the Activity object model. The SDK also provides detailed information about the MSN development and testing requirements that your Activity must meet, and how to increase the usage of your MSN Messenger Activity application.
标签： Introduction Messenger Activity the
上传时间： 2015-09-06
上传用户：ruan2570406
