跨境贸易电子商务服务系统接口-电商V1.1

该RTSP播放器实现了主流RTSP播放器的基本功能，并有所拓展：　　1、RTSP 标准码流（包括音视频）的实时预览播放；　　2、网络数据流的断线重连；　　3、对存储文件的解码播放以及控制；　　4、音视频码流的同步存储，文件存储时以当前系统的时间戳作为音视频 播放时的索引，方便在文件播放时以时间戳作为检索条件来点播文件；　　5、视频播放格式上支持 h.264、mpeg4、mpeg2 等，音频播放格式上支 持 AAC、AMR、G711 等；　　6、视频抓拍；　　7、视频显示角度旋转；　　8、画面填充控制显示比例。

基于MATLAB的QPSK在瑞利、高斯和莱斯信道下仿真

研磨设计模式（完整版pdf）相信我不用介绍，很多人都在找这本书吧，今天我特意从另外的地方下载到了这本书，发了几十积分。才弄到。为了让大家同时分享这本书的精华。我今天特意上传。注：此电子书较大，我分了3个部分的压缩文件，需全部下完，才可得到这电子书的pdf。下面是网上对此书的评价： 《研磨设计模式》完整覆盖GoF讲述的23个设计模式并加以细细研磨。初级内容从基本讲起，包括每个模式的定义、功能、思路、结构、基本实现、运行调用顺序、基本应用示例等，让读者能系统、完整、准确地掌握每个模式，培养正确的“设计观”；中高级内容则深入探讨如何理解这些模式，包括模式中蕴涵什么样的设计思想，模式的本质是什

模拟ECG心电信号数据（matlab）, 有助于加深对生物电数据处理理解和学习。

QT串口简单通信，初始化时搜索串口，设置串口参数，实现串口发送和接收。

应用VS2010及opengl编写的雪花动画。底部的大雪花可以旋转，并伴随空中有旋转的雪花飘落。

前几天一直在整平衡小车，想用这个理解一下pid，并调一调带编码盘的电机。首先谈谈我对pid算法的理解，刚开始以为平衡小车是采取的串级pid来是小车平衡，就是通过角度算出此时的pwm，在通过这个pwm去当作速度环的入口参数，通过编码盘来获取小车的速度控制小车由角度环指定速度下行驶。但通过实践并不是这样，速度环和角度环应该是两个独立的系统，角度环用来让小车快速的恢复到平衡状态，如果初始化陀螺仪时陀螺仪的角度正好重力重合，那么你的小车就会平衡，否则就会向一个方向加速，只至倒下，加上速度环就会解决这一问题，速度环是为了消除小车的位移，让小车能够在一定的位移范围内调整角度，如果下车像一个方向一直加速

ARM内核32位单片机STM32F407引脚详细说明 （pdf文档）Pinouts and pin descriptionSTM32F405XX. STM32F407XXTable 6. STM32F40x pin and ball definitions(continued)Pin numberPin nameo(function afterAlternate functionsAdditional functionsreset) 5二USART2_CTS/UART4_TX/PAO-WKUPETH MII CRS/142334N3401/0 FT(5)TIM2 CH1 ETRADC123 INONKUP(4,(PAO)TIM5 CH1/ TIM8 EtR/EVENTOUTUSART2 RTS/UART4 RX152435N241PA1/O FT(4) ETH_RMI_REF_CLK/ETH MIL RX CLKADC123 N1TIM5 CH2/ TIMM2 CH2EVENTOUTUSART2 TX/TIM5 CH3/162536P242PA21O FT(4)TIM9 CH1/TIM2 CH3ADC123 N2ETH MDIO/ EVENTOUTF443PH2LOFTETH_MIL_CRS/EVENTOUTG444PH3/OFTETH MII COLEVENT○UT12C2 SCLH4|45PH41/O FTOTG HS ULPI NXTEVENTOUTPH5/OFT12C2 SDA/ EVENTOUTUSART2 RX/TIM5 CH4/172637R247PA3/O/FT/(4) TIM9_CH2/TIM2_CH4/OTG HS ULPI DOADC123 N3ETH MII COL/EVENTOUT18273848VBYPASS REG192839K449DDSPI1 NSS/ SPI3 NSS/USART2 CK/202940N450PA41/0 TTa(4)DCMI HSYNC/ADC12 IN4/DAC1 OUTOTG HS SOF/12S3 WSEVENTOUTSPI1 SCK/213041P451PA51O TTa(4OTG HS ULPI CKIADC12 IN5/DAC2 OUTTIM2 CH1 ETR/TIM8 CHIN/ EVENTOUTSPI1 MISO/223142P352PA6IO FT(4) TIM8 BKIN/TIM13_CH1/DCMI PIXCLK/TIM3 CH1ADC12 N6/TIM1 BKIN EVENTOUT46/167DoC ID 022152 Rev 2STM32F405XX. STM32F407XXPinouts and pin descriptionTable 6. STM32F40x pin and ball definitions(continued)Pin numberPin nameo(function afterAlternate functionsAdditional functionsreset) 5二SPI1 MOSI/TIM8 CH1N/TIM14 CH1/TIM3 CH2233243R353PA71O FT(4)ETH MI RX DV/TIM1 CHIN/ADC12 N7RMIL CRS DVIEVENTOUTETH RMI RX DO243344N554PC41/O FT (4) ETH_MIL_RX_DOADC12 N14EVENTOUTETH RMII RX D1/253445P555PC51O FT(1)ETHM‖RxD1/ADC12 IN15EVENTOUTTIM3 CH3/ TIM8 CH2N/26|3546R5561/0 FT(4) OTG_HS_ULPI_D1/ETH MIL RXD2ADC12 IN8TIM1 CH2N/ EVENTOUTTIM3 CH4/TIM8 CH3N/OTG HS ULPI D227|3647R45PB11O FT(ETH MI RXD3ADC12 N9OTG HS INTN/TIM1 CHSN/ EVENTOUTPB2-BOOT1283748M658/OFTEVENTOUT(PB2)--49R659PF11 VO FT□DcM|12′ EVENTOUT50P6|60PF12LOFTFSMC A6/ EVENTOUT51M86152N862DD53 N663 PF13 VOFTFSMC-A7/EVENTOUT54R764PF 14LOFTFSMC AB/ EVENTOUT55P765PF151O FTFSMC A9/EVENTOUT56N766PGOFSMC A10/ EVENTOUT57M767PG11O FTFSMC A11/ EVENTOUT3858R868PE7LOFTFSMC D4/TIM1 ETR/EVENTOUT3959P869PEgFSMC D5/ TIM1 CH1N/1O FTEVENTOUT4060P970PEg10 FTFSMC D6/TIM1 CH1/EVENTOUT61M971SSDoC ID 022152 Rev 247/167Pinouts and pin descriptionSTM32F405XX. STM32F407XXTable 6. STM32F40x pin and ball definitions(continued)Pin numberPin name三(function afterAlternate functionsAdditional functionsreset) 5当|二62N972VDD4163R973PE10/OFTFSMC D7/TIM1 CH2N/EVENTOUTFSMC DB/TIM1 CH2/4264P10|74PE11EVENTOUTPE12FSMC D9/TIM1 CH3N,4365R1075VO FTEVENTOUT4466N1176PE131OFFSMC D1O/TIM1 CH3/EVENTOUTFSMC D11/TIM1 CH44567P1177PE14YO FTEVENTOUT4668R1178PE15/OFTFSMC D12/TIM1 BKINEVENTOUTSPI2 SCK/ 12S2 CK/12C2 SCL USART3 TX/294769R1279PB10/O FTOTG HS ULPI D3/ETH MIL RX ER/TIM2 CH3/ EVENTOUT12C2 SDA/USART3 RX/OTG HS ULPI D4/304870R1380PB111OETH RMI TX EN/ETH MIL TX EN了T|M2cH4/ EVENT○UT314971M1081CAP 1325072N1082VDD12C2 SMBA/TIM12 CH1/M1183PH6LOFTETH MII RXD2/EVENTOUT2C3 SCLN12|84PH7/OFTETHM|RⅩD3/EVENTOUT12C3 SDAPH8ODCMI HSYNC/EVENTOUT11386PH91OFT12C3 SMBA/TIM12 CH2DCMI DO/ EVENTOUTL1387PH101O FTTIM5 CH1/DCMI D1EVENTOUTL12|88lOFTTIM5 CH2/DCMI D2PH1 1EVENTOUT48/167DoC ID 022152 Rev 2STM32F405XX. STM32F407XXPinouts and pin descriptionTable 6. STM32F40x pin and ball definitions(continued)Pin numberPin nameo(function afterAlternate functionsAdditional functionsreset) 5二-|K12|89TIM5 CH3/ DCMI D3/PH12/OFTEVENTOUT-|H1290VssJ12|91VDDSPI2 NSS/2S2 WS/12C2 SMBA/USART3 CK/TIM1 BKIN/335173P1292PB12CAN2 RX1O FTOTG HS ULPI D5ETH RMII TXDOETH MII TXDO/OTG HS ID/ EVENTOUTSP12 SCK/12S2 CK/JSART3 CTS/TIM1 CH1N/CAN2 TX/34|5274P1393B13OTG HS ULPI D6/OTG HS VBUSETH RMII TXD1/ETH MIL TXD1/EVENTOUTSPI2 MISO/ TIM1 CH2N/TIM12 CH1/355375R1494PB14/OFTOTG HS DM/USART3 RTS/TIM8 CH2N/12S2ext SD/EVENTOUTSP12_ MOSI/12S2 SD/365476R1595PB15VO FTTIM1 CH3N/TIM8 CH3N/TIM12 CH2/OTG HS DP/ EVENTOUTPD8LOFTFSMC D13/ USART3 TX/5577P159EVENTOUT5678P1497PDg/OFTFSMC D14/USART3 RXEVENTOUT5779N1598PD101O FTFSMC D15/USART3 CKEVENTOUTFSMC CLE5880N1499PD11lOFTFSMC_A16/USART3-_CTS/EVENTOUTFSMC ALE/5981N13100PD12/OFTFSMC A17/TIM4 CH1USART3 RTS/EVENTOUTDoC ID 022152 Rev 249/167Pinouts and pin descriptionSTM32F405XX. STM32F407XXTable 6. STM32F40x pin and ball definitions(continued)Pin numberPin nar三(function afterAlternate functionsAdditional functionseey)点二6082M15101FSMC A18/TIM4 CH2/PD13VO FTEVENTOUT102V84J13103VDD6185M14104PD14/OFTFSMC DO/TIM4 CH3/EVENTOUT/ EVENT○UT6286L14105PD15/OFTFSMC D1/TIM4 CH4/EVENTOUT87L15 106 PG2VO FT FSMC_A12/EVENTOUT88K15107PG3/OFTFSMC A13/ EVENTOUT89K14108PG4/OFTFSMC A14/EVENTOUT9oK13|109PG5FSMC A15/ EVENT○UT91J15110PG6FSMC NT2/ EVENTOUT92J14111PG7/OFTFSMC INT3儿SART6CKEVENTOUTUSART6 RTS/93H14112PG8LOFTETH PPS OUTEVENTOUT94G12|113SS95H13114VDD12S2 MCK/TIM8 CHU/SDIO D6/376396H15115PC6/OFTUSART6 TXDCMI DO/TIM3 CH1/EVENTOUT1253 MCK/TIM8 CH2/SDIO D7/386497G15116PC7lOFTUSART6 RX/DCMI DI/TIM3 CH2/EVENTOUTTIM8 CH3/SDIO DOPC8TIM3 CH3/USART6 CK/DCMI D2/ EVENTOUT12S CKIN/MCO2/406699F14118PC9TIM8 CH4/SDIO D1//O FT/12C3 SDA/DCMI D3TIM3 CH4/ EVENTOUT50167DoC ID 022152 Rev 2STM32F405XX. STM32F407XXPinouts and pin descriptionTable 6. STM32F40x pin and ball definitions(continued)Pin numberPin nameo(function afterAlternate functionsAdditional functionsreset) 5二MCO1/USART 1 CK/4167100F15119PA81/0 FTTIM1 CH1/12C3 SCL/OTG FS SOF/EVENTOUTUSART1 TX/ TIM1 CH2/4268101E15120PA9VO FT2C3_SMBA/DCMIDO/OTG_FS_VBUSEVENTOUTUSART1 RX/ TIM1 CH34369102D15121PA101O FTOTG FS ID/DCMI D1EVENTOUTUSART1 CTS/CAN1 RX4470103c15122PA11/OFTTIM1 CH4/OTG FS DM/ EVENTOUTUSART1 RTS/ CAN1 TX4571104B15123PA121O FTTIM1 ETR/ OTG FS DP/EVENTOUTPA146 72 105 124 (TMS-SWDIO)/OFTJTMS-SWDIO/ EVENTOUT4773106F13|125CAP74107F12126sss4875108G13127VDDE12|128PH13/O FTTIM8 CH1N/CAN1 TX/EVENTOUT-E13129PH14LOFTTIM8 CH2N/DCM D4/EVENTOUTD13130PH15VO FTTIM8 CH3N/DCMI D11/EVENTOUTTIM5 CH4/SP12 NSSE14131PIO1O FT1252 WS/DCMI D13EVENTOUTD14132PlOFTSPI2 SCK/12S2 CK/DCMI D8/ EVEntoUtTIM8 CH4/SP12 MISOc14133Pl21O FTDCMI D9/12S2ext SDEVENTOUTTIM8 ETR/SPI2 MOSI/C13134PI3/O FT12S2 SD/DCMI D10/EVENTOUT--D9|135VSSc9136VDDDoC ID 022152 Rev 251/167Pinouts and pin descriptionSTM32F405XX. STM32F407XXTable 6. STM32F40x pin and ball definitions(continued)Pin numberPin nameo(function afterAlternate functionsAdditional functionsreset) 5二PA144976109A14137/O FTJTCK-SWCLK/EVENTOUT(JTCK-SWCLK)PA15JTDI SPI3 NSS/5077110A131381OFT12S3_WS/TIM2_CH1_ETR(JTDISPI1 NSS/EVENTOUTSPI3 SCK /12S3 CK/UART4 TXSDIO D2/5178111B14139PC101O FTDCMI D8/ USART3 TX/EVENTOUTUARTA RX/ SPI3 MISO/5279112B13140PC1110FTSDIO D3/DCMI D4/ 3 RX/12S3ext SD/ EVENTOUTUART5 TX/SDIO CK/5380113A12141PC12/OFTDCMI D9/SP 3 MOSI/2S3 SD/USART3 CK/EVENTOUT-81114B12142PDO/OFTFSMC D2/CAN1 RX/EVENTOUT82115c12143PD1 I/OFTFSMC D3/ CAN1 TX/EVENTOUTTIM3 ETRUART5 RX5483116D12144PD2/OFTSDIO CMD/DCMI D11/EVENTOUT84117D11145FSMC CLK/USART2 CTSPD3L EVENTOUT/OFTFSMC NOE/USART2 RTS85118D10146PD4L EVENTOUT86119c11147PD5/OFTFSMC NWE/USART2 TX/EVENTOUT120|D8148121c8149DD87122B11150PD6lOFTFSMC NWAITUSART2 RX/ EVENTOUTUSART2 CK/FSMC NE188123A11151PD710FTFSMC NCE2/ EVENTOUTUSART6 RX/124c10152PG9/OFTFSMC NE2/FSMC NCE3EVENTOUT521167DoC ID 022152 Rev 2STM32F405XX. STM32F407XXPinouts and pin descriptionTable 6. STM32F40x pin and ball definitions(continued)Pin numberPin nameo(function afterAlternate functionsAdditional functionsreset) 5二125B10153PG10VO FTFSMC NCE4 1/FSMC NE3/EVENTOUTFSMC NCE4 2/ETH MIL TX EN-126B9154G111O FTETH RMIL TX ENEVENTOUTFSMC NE4/127B8155PG121/OFTUSART6 RTS/EVENTOUTFSMC A24/USART6 CTS-128A8156PG13lOFT/ETH MI TXDO/ETH RMII TXDOEVENTOUTFSMC A25/ USART6 TX129A7157PG1410 FTTETH MII TXD1ETH RMIL TXD 1/EVENTOUT130D7158SS131c7159DDUSART6 CTS/132B7160PG15lOFTDCMI D13/ EVENTOUTPB3JTDO/ TRACESWOISPI3 SCK/12S3 CK/5589133A10161(JTDO/1/O FTTIM2 CH2/ SPI1 SCKTRACESWO)EVENTOUTPB4NJTRST/ SPI3 MISO/5690134A9162/OFTTIM3 CH1/SP11 MISO/(NUTRST)12S3ext SD/EVENTOUT121 SMBA/ CAN2 RX/OTG HS ULPI D7/5791135A6163PB5/OFTETH PPS OUT/TIM3 CH2/SP11 MOSISP13 MOSI/DCMI D10/12S3 SD/ EVENTOUT12C1 SCL/ TIM4 CH1/PB6CAN2 TX/5892136B6164/OFTDCMI DS/USART 1 TXEVENTOUTDoC ID 022152 Rev 253/167

【实例简介】学了几天的vc,不好意思，做了一个东西，功能还不够完善，用鼠标画线，实时的把曲线信息采集到数据库中，然后重画曲线。步鄹：1。鼠标画线 2。点击统计数据得到曲线总的点数。3 重新打开一个视图 4 点击重画曲线，即可。有时候会出问题，呵呵。

某大学构建了自己的在线教育平台，将多门在线课程放到平台上供学生进行在线学习，在学生学习过程中产生了很多数据，学校的领导和老师希望根据这些数据来评估学生的学习情况和在线课程质量，以便更好的进行学生学习情况分析和提升课程质量。