dms数据采集系统

本系统以直流电流源为核心，AT89S52单片机为主控制器，通过键盘来设置直流电源的输出电流，设置步进等级可达1mA，并可由数码管显示实际输出电流值和电流设定值。本系统由单片机程控输出数字信号，经过D/A转换器（AD7543）输出模拟量，再经过运算放大器隔离放大，控制输出功率管的基极，随着功率管基极电压的变化而输出不同的电流。单片机系统还兼顾对恒流源进行实时监控，输出电流经过电流/电压转变后，通过A/D转换芯片，实时把模拟量转化为数据量，再经单片机分析处理， 通过数据形式的反馈环节，使电流更加稳定，这样构成稳定的压控电流源。实际测试结果表明，本系统输出电流稳定，不随负载和环境温度变化，并具有很高的精度，输出电流误差范围±5mA，输出电流可在20mA~2000mA范围内任意设定，因而可实际应用于需要高稳定度小功率恒流源的领域。(the system to DC current source to the core, MCU AT89S52 main controller, through the keyboard to set up DC power supply output current, set up to 1mA Stepping grades, digital control can be shown by the actual output current value and current setting. The system consists of programmable microcontroller digital signal output, after the D/A converters (AD7543) analog output. After Operational Amplifiers isolation, amplification and control of the output power base. With the power of the base voltage changes in the output current. SCM system also takes on the constant current source for real-time monitoring, after current output current/voltage changes, the A/D converter chip, real-time conversion from analog to the volume of data and then analyzed by the MCU, through data link in the )

Some good Linux coding examples. Most of them are beginner level codes. Topics:Pthreads,Shell,UNIX processes

字体设置程序 可以设置不同字体 还可以改变颜色(Program can set different font settings can also change the color of the font)

simulation of an arm on matlab

基于STM32单片机互感器电压电流采集PCB&原理图&程序CS5460 如简介所说（电赛k题）

使用德国产芯片-TDC-GP2实现两路激光信号时间差的测量，实际项目中使用(Use Germany chip-TDC-GP2 achieve laser signal time difference measurement of two-way, real-world projects using)

港口泊位分配问题，采用贪心算法和模拟退火算法(Port berth allocation problem)

原版经典大作，有一点英语基础的人都能搞定。chm格式清晰度极佳。(original classical crescendo, and is based on the English 1:00 able to get. Chm format excellent clarity.)

演示了WPF中的Page页跳转功能，十分适合新手参考，实用性很强(Demonstrated in WPF Page page jump function, very suitable for beginners reference, very practical)

该项目使用一个enum类型表示一副牌的4种不同花色，然后使用一个struct型表示日历日期 -The project uses a enum types express one of four kinds of different brand suit, and then use a struct type that calendar date