About: hamsterdb is a database engine written in ANSI C. It supports a B+Tree index structure, uses memory mapped I/O (if available), supports cursors, and can create in-memory databases. Release focus: Major feature enhancements Changes: This release comes with many changes and new features. It can manage multiple databases in one file. A new flag (HAM_LOCK_EXCLUSIVE) places an exclusive lock on the file. hamsterdb was ported to Windows CE, and the Solution file for Visual Studio 2005 now supports builds for x64. Several minor bugs were fixed, performance was improved, and small API changes occurred. Pre-built libraries for Windows (32-bit and 64-bit) are available for download. Author: cruppstahl
标签： C. hamsterdb structure database
上传时间： 2013-12-11
上传用户：LouieWu
Floyd-Warshall算法描述 1)适用范围： a)APSP(All Pairs Shortest Paths) b)稠密图效果最佳 c)边权可正可负 2)算法描述： a)初始化：dis[u,v]=w[u,v] b)For k:=1 to n For i:=1 to n For j:=1 to n If dis[i,j]>dis[i,k]+dis[k,j] Then Dis[I,j]:=dis[I,k]+dis[k,j] c)算法结束：dis即为所有点对的最短路径矩阵 3)算法小结：此算法简单有效，由于三重循环结构紧凑，对于稠密图，效率要高于执行|V|次Dijkstra算法。时间复杂度O(n^3)。 考虑下列变形：如(I,j)∈E则dis[I,j]初始为1,else初始为0，这样的Floyd算法最后的最短路径矩阵即成为一个判断I,j是否有通路的矩阵。更简单的，我们可以把dis设成boolean类型，则每次可以用“dis[I,j]:=dis[I,j]or(dis[I,k]and dis[k,j])”来代替算法描述中的蓝色部分，可以更直观地得到I,j的连通情况。
标签： Floyd-Warshall Shortest Pairs Paths
上传时间： 2013-12-01
上传用户：dyctj
basic.c */ /**//* Project:NeuroBasic, basic package*//**/ /* Survey:This is a simple Basic b-code compiler which*/ /*can be used as a comfortable command shell for */ /* any program. The actual compiler is found in */ /*compiler.c.*/ /*The functions m_fctptr() and user_server()*/ /*build an interface to an
标签： basic NeuroBasic Project package
上传时间： 2017-02-15
上传用户：xymbian
该程序用以查找任意两个整数之间的所有素数。 Prime number finder can find all primes between a and b and will write the results to the file PRIMES.TXT
上传时间： 2014-01-14
上传用户：cccole0605
DESCRIPTION The DCP0105 family is a series of high efficiency, 5V input isolated DC/DC converters. In addition to 1W nominal galvanically isolated output power capability, the range of DC/DCs are also fully synchronizable. The devices feature thermal shutdown, and overload protection is implemented via watchdog circuitry. Advanced power-on reset techniques give superior reset performance and the devices will start into any capacitive load up to full power output. The DCP0105 family is implemented in standard- molded IC packaging, giving outlines suitable for high volume assembly.
标签： DESCRIPTION efficiency converters isolated
上传时间： 2013-11-28
上传用户：CHENKAI
Servomotors are available as AC or DC motors. Early servomotors were generally DC motors because the only type of control for large currents was through SCRs for many years. As transistors became capable of controlling larger currents and switching the large currents at higher frequencies, the AC servomotor became used more often. Early servomotors were specifically designed for servo amplifiers. Today a class of motors is designed for applica-tions that may use a servo amplifier or a variable-frequency controller, which means that a motor may be used in a servo system in one application, and used in a variable-frequency drive in another application. Some companies also call any closed-loop system that does not use a stepper motor a servo system, so it is possible for a simple AC induction motor that is connected to a velocity controller to be called a servomotor.
标签： motors Servomotors servomotors available
上传时间： 2014-08-10
上传用户：源码3
常用芯片DIP SOT SOIC QFP电阻电容二极管等3D模型库 3D视图封装库 STEP后缀三维视图（154个）:050-9.STEP0805R.STEP1001-1.STEP1001-2.STEP1001-3.STEP1001-4.STEP1001-5.STEP1001-6.STEP1001-7.STEP1001-8.STEP103_1KV.STEP10X5JT.STEP1206R.STEP13PX2.STEP15PX2.STEP20P插针.STEP25V1000UF.STEP3296W.STEP35V2200UF.STEP3mmLED.STEP3mmLEDH.STEP3X3可调电阻.STEP400V0.1UF.STEP455.STEP630V0.1UF.STEP7805.STEP8P4R.STEPAXIAL-0.2-0.125W.STEPAXIAL-0.4-0.25W.STEPaxial-0.6-2W.STEPB-3528.STEPC-0805.STEPC06x18.STEPCAP-6032.STEPCH3.96 X2.STEPCH3.96-3P.STEPD-PAK.STEPDB25.STEPDC-30.STEPDIP14.STEPDIP16.STEPDIP6.STEPDIP8.STEPDO-214AA.STEPDO-214AB.STEPDO-214AC.STEPDO-41.STEPDO-41Z.STEPFMQ.STEPGNR14D.STEPH9700.STEPILI4981.STEPIN4007.STEPIN5408.STEPJP051-6P6C_02.STEPJQC-3F.STEPJS-1132-10.STEPJS-1132-11.STEPJS-1132-12.STEPJS-1132-13.STEPJS-1132-14.STEPJS-1132-15.STEPJS-1132-2.STEPJS-1132-3.STEPJS-1132-4.STEPJS-1132-5.STEPJS-1132-6.STEPJS-1132-7.STEPJS-1132-8.STEPJS-1132-9.STEPJS-1132R-2.STEPJS-1132R-3.STEPJS-1132R-4.STEPJS-1132R-5.STEPJS-1132R-6.STEPJS-1132R-7.STEPJS-1132R-8.STEPJZC-33F.STEPKBP210.STEPKE2108.STEPKF2510 X8.STEPKF301.STEPKF301x3.STEPKSD-9700.STEPLED5_BLUE.STEPLED5_GRE.STEPLED5_RED.STEPLED5_YEL.STEPLFCSP_WQ.STEPLQFP100.STEPLQFP48.STEPMC-146.STEPmolex-22-27-2021.STEPmolex-22-27-2031.STEPmolex-22-27-2041.STEPmolex-22-27-2051.STEPmolex-22-27-2061.STEPmolex-22-27-2071.STEPmolex-22-27-2081.STEPMSOP10.STEPMSOP8.STEPPA0630NOXOX-HA1.STEPPIN10.STEPPIN24.STEPPIN24A.STEPR 0805.STEPR0402.STEPR0603.STEPR0805.STEPR1206.STEPRA-15.STEPRA-20.STEPRS808.STEPSIP-3-3.96 22-27-2031.STEPSL-B.STEPSL-D.STEPSL-E.STEPSL-G.STEPSL-H.STEPSOD-123.STEPSOD-323.STEPSOD-523.STEPSOD-723.STEPSOD-80.STEPSOIC-8.STEPSOP-4.STEPSOP14.STEPSOP16.STEPSOP18.STEPSOT-89.STEPSOT223.STEPSOT23-3.STEPSOT23-5.STEPSSOP28.STEPTAJ-A.STEPTAJ-B.STEPTAJ-C.STEPTAJ-D.STEPTAJ-E.STEPTAJ-R.STEPTHB6064H.STEPTO-126.STEPTO-126X.STEPTO-220.STEPTO-247.STEPTO-252-3L.STEPTOSHIBA_11-4C1.STEPTSSOP-8.STEPTSSOP14-BOTTON.STEPTSSOP14.STEPTSSOP28.STEPUSB-A.STEPUSB-B.STEPWT.STEP
标签： 芯片 dip sot soic qfp 电阻 电容 二极管 封装
上传时间： 2021-11-21
上传用户：XuVshu
Altium Designer常用器件集成库PCB封装库原理图库3D库元件库集成库原理图器件型号列表：76个13W3 2N7002 74HC0474HC0874HC244D74HC595 74LS138 80508550 8P4R_0603ADM2582EADM3053AS5145B AT24C02BAT54SBUZZ BatteryCCT6806CD4001CD4053CapacitorDS18B20Diode Diode SchottkyFP6101FT2232DFUSEHMC5883LINA118IR2010IR2101SIR2136SIRF1010EIRFP7404ISO7240InductorLEDLF444LG9110SLM339LM393LMV7239MAX232MCP2551MCP6022MCP6024MPU6050Mic2941Micro SD CardMicro USBNuMicro-M051OPTOISOIPESDxS2UATPT2272PVI1050PhonejackResistanceSN65VHD230STC12LE5202STM32F103CBT6STM32F103RBT6STM32F103VCT6STM32F407VSwitchTJA1050TLV5638ITMS320F28035PAGTMS320F28035PNTOP242U18UC3854ULN2803USB A-BVBUS Xtal 集成库PCB封装列表：76个8P4R_060313W30805DBC04-BBT_CR1220BUZZC0201C0402C0603C0805C1206CD127CPX-32CRYSTALD1206DC-0003DC-0005DIP-4DIP-6DIP-8DO-201ADDO-214AADO-214ABDO-214ACF5mmFUSEFUSE_001FUSE_LFUSE2HC-49/U-SHDRX3L-330uHLCC-24NLPCC-16NLQFP-48LQFP-64LQFP-80Micro SD CardMicro USBR0201R0402R0603R0805R1206R1210R2512SDRH5D18-220NSIP-3SMD CRYSTALSMD-8SOIC-4SOIC-8SOIC-14SOIC-16SOIC-16WSOIC-18SOIC-20SOIC-24SOIC-28SOT-23SOT23-5SOT23-6SWSwitch1TD-19XATO-92TO-92ATO-220-2TO-220ATO-220BTO-247ACTO-263-5TQFP-100TSSOP-16USB DIPUSB-A
标签： altium designer pcb
上传时间： 2022-02-12
上传用户：
为适应双向DC/DC功率变换的电流采样需求,一种高精度高边电流采样电路被提出。其基本思想是在功率电路的高边串入采样电阻,借助电流镜原理并引入偏置电流电路,将双向电流均转换为正向电压输出。通过理论分析与仿真结合的方法对电流镜采样原理及4种不同的偏置电流电路方案进行对比,最后通过实验数据验证了高精度高边电流采样电路的有效性。实验数据表明,该采样电路可在-25~75℃的温度工作范围内,针对-10~＋10 A范围内的电流采样实现优于5%的采样精度。Current sensing plays an important role in controlling,monitoring or protection functions of power systems.To meet the current sensing requirement of bidirectional DC/DC converters,a high-accuracy bidirectional current sensing circuit is proposed.The proposed current sensing circuit inserts a resistor in the path of the current to be sensed,while the current mirror and biased current circuit are introduced.Therefore,the bidirectional current can be expressed by positive voltage.By theoretical analysis and simulation,the sampling theory is analyzed and four biased current circuits are compared.At last,experimental results verified the proposed method.It is demonstrated that the proposed current sensing circuit can achi...
上传时间： 2022-04-22
上传用户：
eeworm.com VIP专区 单片机源码系列 67资源包含以下内容：1. P89LPC912单片机数据手册.pdf2. P89LPC932 Flash单片机使用指南.pdf3. PC MCU串行通信的应用设计方法.pdf4. RSA加解密系统及其单芯片实现.pdf5. PCF8563实时时钟高精度调整方法.pdf6. PAM2862 1A LED Driver with Int.pdf7. AN070219 PCF8563中断输出功能.pdf8. SJA1000 Stand-alone CAN contro.pdf9. PCA82C250 PCA82C251 CAN Transc.pdf10. SJA1000独立的CAN控制器应用指南.pdf11. PCA82C250 CAN收发器应用指南.pdf12. SCN2681 SCN68681和SCC2691数据通信.pdf13. Philips单片机P89V51RD2简介.pdf14. 飞利浦SC16C器件和飞利浦低功耗SC16CxxxB器件之间.pdf15. P89V51RD2单片机看门狗的使用方法.pdf16. SC16C554 SC16C654 SC16C554B SC.pdf17. P89V51RD2的加密操作.pdf18. SC16C550应用实例.pdf19. 如何在C语言中调用P89V51RD2的IAP功能.pdf20. P89LPC901实现ADC DAC及UART通信.pdf21. P89LPC900在高精度模数转换场合的应用.pdf22. P89C51Rx2xx硬件进入ISP的方法.pdf23. Study-3 51单片机开发板原理图.pdf24. 基于P87LPC760的DALI从机.pdf25. PCA9515D PCA9515DP I2C中继器.pdf26. PCA9534 8bit I2C bus and SMBus low power IO port with interru.pdf27. LPC900 Flash单片机键盘中断.pdf28. PCA9516 5channel I2C hub.pdf29. PCA9535 PCA9535C 16bit I2C bus.pdf30. LPC700系列单片机看门狗复位应注意的问题.pdf31. PCA9516 I2C中继器.pdf32. PCA9536 4bit I2C bus and SMBus.pdf33. 内置Reset WDT电路的串行E2PROM原理及应用设计.pdf34. PCA9517 Level translating I2C-.pdf35. PCA9537 4bit I2C bus and SMBus.pdf36. X-tal oscillators on 8-bit mic.pdf37. PCA9517低电压I2C总线中继器.pdf38. PCA9538 8bit I2C bus and SMBus.pdf39. 8051系列单片机应用系统的PROTEUS仿真设计.doc40. PCA9518 Expandable 5channel I2.pdf41. PCA9539 PCA9539R 16-bit I2C-bu.pdf42. 基于单总线技术蓄电池监控系统设计.pdf43. PCA9518A I2C 中继器集线器与扩展器.pdf44. PCA9540B 2channel I2C bus mult.pdf45. 基于AT89C51应用系统的串行通信设计.pdf46. PCA9519 4channel level transla.pdf47. PCA9541 2 to 1 I2C-bus master.pdf48. PCA9519 4通道I2C-bus SMBus 中继器.pdf49. PCA9544A 4channel I2C multiple.pdf50. PCA9542A 2channel I2C bus mult.pdf51. PCA9544A I2C多路复用器.pdf52. PCA9544中文资料.pdf53. PCA9549 Octal bus switch with.pdf54. PCA9545A/PCA9545B/PCA9545C I2C.pdf55. PCA9549D/PCA9549PW/PCA9549B I2.pdf56. PCA9546A 4 channel I2C bus swi.pdf57. PCA9555 16bit I2C-bus and SMBu.pdf58. PCA9546A I2C多路复用器和开关.pdf59. PCA9670 Remote 8-bit IO expand.pdf60. PCA9547 8 channel I2C bus mult.pdf61. PCA9671 Remote 16-bit IO expan.pdf62. PCA9547D/PW/BS I2C多路复用器和开关.pdf63. PCA9672 Remote 8-bit IO expand.pdf64. PCA9548中文资料.pdf65. PCA9673 Remote 16-bit IO expan.pdf66. PCA9548A 8 channel I2C bus swi.pdf67. PCA9674 PCA9674A Remote 8-bit.pdf68. PCA9548AB I2C多路复用器和开关.pdf69. 8-bit I2C-bus and SMBus IO port with reset.pdf70. PCA9698芯片的应用.pdf71. PCA9698 I2C扩展芯片.pdf72. PCF2123的中断输出功能.pdf73. TI新推29款Cortex-M3内核Stelleris AR.pdf74. 端口RS-232工业PC104多串口卡.pdf75. TIPC1000带视频输入接口的嵌入式触摸平板电脑.pdf76. 串口调试助手用户手册.pdf77. PCM8416AS自动校准功能智能型PC104高分辨率多功能.pdf78. TJA1042高速CAN 收发器.pdf79. COS-II调试插件.pdf80. PROFIBUS技术和应用.pdf81. TJA1042 High-speed CAN transce.pdf82. TKStudio IDE集成开发环境升级记录.pdf83. Replacement of NXP PCA9518 wit.pdf84. TJA1051高速CAN 收发器.pdf85. 1A SIMPLE STEP-DOWN SWITCHING.pdf86. RSM232隔离RS-232收发器.pdf87. TJA1051 High-speed CAN transce.pdf88. DUAL RS-232 DRIVER RECEIVER WI.pdf89. RSM-4055 8通道隔离数字量输入输出模块.pdf90. 外部工具用户手册.pdf91. XGate COP10 CANopen 嵌入式通信模块.pdf92. RSM-6505 5通道热电偶测量模块.pdf93. 十六进制编辑器.pdf94. ZigBee模块ZICM2410应用开发指南.pdf95. RSM-65055通道热电偶测温模块.pdf96. 图片字模助手.pdf97. ZY00xxGD-10W交直流两用全电压输入AC-DC电源模.pdf98. TKStudio下SDCC_8051用户使用手册.pdf99. 定压输出隔离稳压单输出系列.pdf100. ZY00xxGD-15W交直流两用全电压输入AC-DC电源模.pdf
上传时间： 2013-04-15
上传用户：eeworm
