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  • 学生成绩查询系统

    学生成绩查询系统,运用结构体,struct ,sort ,Clrscr(),textcolor()函数,用for()循环语句,switch和ifelse作为条件测试语句。 程序实现了学生成绩查询功能,有20个我们班学生的数据信息,每个包含: 学号 — num [10](字符串)、姓名(拼音)— name[25](字符串)、 性别 — sex(字符,M或W)、年龄 — age(整型)、 三门课程成绩(高数、英语、计算机)— score [3 ](单精度)。设计一个系统: 定义及输出。用结构体类型数据及其赋初值的方法把学生的数据送到结构体数组中(第一个数据用自己的真实数据,其它数据自定,但注意要是合法数据),然后把它们输出显示;计算并排序。计算每个学生三门课程的总分(sum,单精度)及平均分(aver,单精度,输出一位小数),还有他们成绩的排名,将包括所有数据的结构体数组元素按总分从大到小的顺序排序打印出来; 运行程序,进入主界面!可输入1—输出所有学生的成绩,输入2—计算和排列学生的成绩,输入3—查询学生个人成绩,输入4—退出查询。 在进行学生个人成绩个人查询可以实现多次查询——进入学生个人查询,输入1回车实现多次查询。 运行环境为TURBOC ,WINDOWSXP。

    标签: 成绩查询系统

    上传时间: 2014-01-01

    上传用户:cx111111

  • Free open-source disk encryption software for Windows Vista/XP, Mac OS X, and Linux Main Features:

    Free open-source disk encryption software for Windows Vista/XP, Mac OS X, and Linux Main Features: * Creates a virtual encrypted disk within a file and mounts it as a real disk. * Encrypts an entire partition or storage device such as USB flash drive or hard drive. * Encrypts a partition or drive where Windows is installed (pre-boot authentication). * Encryption is automatic, real-time (on-the-fly) and transparent. * Provides two levels of plausible deniability, in case an adversary forces you to reveal the password: 1) Hidden volume (steganography) and hidden operating system. 2) No TrueCrypt volume can be identified (volumes cannot be distinguished from random data). * Encryption algorithms: AES-256, Serpent, and Twofish. Mode of operation: XTS. Further information regarding features of the software may be found in the:http://www.truecrypt.org/

    标签: open-source encryption Features software

    上传时间: 2013-12-20

    上传用户:123啊

  • The TMS320VC5506/C5507/C5509A USB peripherals can be clocked from either the USB APLL or the USB DP

    The TMS320VC5506/C5507/C5509A USB peripherals can be clocked from either the USB APLL or the USB DPLL. Since the APLL is inherently more noise tolerant and has less long-term jitter than the DPLL, it is recommended that you switch to it for any USB operations.

    标签: USB peripherals the clocked

    上传时间: 2014-01-01

    上传用户:yuzsu

  • 采用VHDL语言设计一个4通道的数据采集控制模块。系统的功能描述如下: 1.系统主时钟为100 MHz。 2.数据为16位-数据线上连续2次00FF后数据传输开始。 3.系统内部总线宽度为8位。

    采用VHDL语言设计一个4通道的数据采集控制模块。系统的功能描述如下: 1.系统主时钟为100 MHz。 2.数据为16位-数据线上连续2次00FF后数据传输开始。 3.系统内部总线宽度为8位。 4.共有4个通道(ch1、ch2、ch3、ch4),每个通道配备100 Bytes的RAM,当存满数据后停止数据采集并且相应通道的状态位产生报警信号。 5.数据分为8位串行输出,输出时钟由外部数据读取电路给出。 6.具备显示模块驱动功能。由SEL信号设置显示的通道,DISPLAY信号启动所选通道RAM中数值的显示过程。数值顺次显示一遍后显示结束,可以重新设定SEL的值选择下一个通道。模块数据线为8位,显示器件为4个8段LED。 7.数据采集模式如下:单通道采集(由SEL信号选择通道),多通道顺次采集(当前通道采满后转入下一通道),多通道并行采集(每通道依次采集一个数据)。模式由控制信号MODE选择,采集数据的总个数由NUM_COLLECT给出。 8.数据采集过程中不能读取,数据读取过程中不能采集

    标签: VHDL 100 MHz

    上传时间: 2013-12-25

    上传用户:zycidjl

  • The SP486 and SP487 are low–power quad differential line drivers meeting RS-485 and RS-422 standard

    The SP486 and SP487 are low–power quad differential line drivers meeting RS-485 and RS-422 standards. The SP486 features a common driver enable control the SP487 provides independent driver enable controls for each pair of drivers. Both feature tri–state outputs and wide common–mode input range. Both are available in 16–pin plastic DIP and SOIC packages.

    标签: differential and standard drivers

    上传时间: 2014-01-13

    上传用户:tianyi223

  • Murphy 大俠 GPL 的 C++/x86 RTOS, 支持 MMU, 用戶/核心 模式區隔. http://hpc.ee.ntu.edu.tw/~murphy/me/EKernel.html

    Murphy 大俠 GPL 的 C++/x86 RTOS, 支持 MMU, 用戶/核心 模式區隔. http://hpc.ee.ntu.edu.tw/~murphy/me/EKernel.html part 2 of 3: user mode LIB

    标签: EKernel Murphy murphy RTOS

    上传时间: 2013-12-23

    上传用户:小鹏

  • cordic methods describe essentially the same algorithm that with suitably chosen inputs can be used

    cordic methods describe essentially the same algorithm that with suitably chosen inputs can be used to calculate a whole range of scientific functions including sin, cos, tan, arctan, arcsin, arccos, sinh, cosh, tanh, arctanh, log, exp, square root and even multiply and divide. the method dates back to volder [1959], and due to its versatility and compactness, it made possible the microcoding of the hp35 pocket scientific calculator in 1972. here is some code to illustrate the techniques. ive split the methods into three parts linear, circular and hyperbolic. in the hp35 microcode these would be unified into one function (for space reasons). because the linear mode can perform multiply and divide, you only need add/subtract and shift to complete the implementation. you can select in the code whether to do the multiples and divides also by cordic means. other multiplies and divides are all powers of 2 (these dont count). to eliminate these too, would involve ieee hackery.

    标签: essentially algorithm describe suitably

    上传时间: 2017-03-02

    上传用户:litianchu

  • 介绍计算机上实现gsm modem短消息收发的模式

    介绍计算机上实现gsm modem短消息收发的模式,描述gsm modem PDU 模式,包括PDU 模式下的gsm modem模块UCS2 编码、解码原理,以及gsm modem发送与接收PDU 串的编制方式, VB 中的MSCOMM 控件,实现gsm modem短消息收发的核心内容。-briefed on computer modem gsm SMS transceiver model, described GSM modem PDU models, including the PDU mode GSM modem module UCS2 encoding, decoding principle, and GSM modems send and receive PDU Series presentation, the VB MSCOMM Control and achieve short GSM modem news transceiver core content

    标签: modem gsm 计算机 收发

    上传时间: 2017-03-10

    上传用户:cxl274287265

  • 实现FPGA和上位机的串口通信

    实现FPGA和上位机的串口通信,里面由波特率发生器,移位寄存器,计数器,detecter,switch,switch_bus等功能块综合而成。

    标签: FPGA 上位机 串口通信

    上传时间: 2017-03-22

    上传用户:dongqiangqiang

  • //获得当前的模式 oldmode = vga_getcurrentmode[] //初始化 vga_init[] //判断是否支持该模式 if[vga_ha

    //获得当前的模式 oldmode = vga_getcurrentmode[] //初始化 vga_init[] //判断是否支持该模式 if[vga_hasmode[mode]] vga_setmode[mode] else { printf["No such mode\n"] exit[1] } //取得信息 width = vga_getxdim[] height = vga_getydim[] colors = vga_getcolors[] //绘图 for[i=0 i<colors i++]{ vga_setcolor[i] vga_drawline[0, i, width-1, i] }

    标签: vga_getcurrentmode vga_init oldmode vga_ha

    上传时间: 2014-12-19

    上传用户:maizezhen