capacity

说明：  我画的收音机PCB板，使用GS1299的收音芯片(I painted the radio PCB board)

本系统严格按照题中所定参数及要求，构建了一个以MSP430单片机为控制核心的温度自动控制系统。该系统用PSB型负温热敏电阻作为温度传感器，以一种类R-F的方法测量木盒内实时温度，单片机用实时温度与预设温度值一起代入PID算式得出一个温度增量，再用此温度增量线性的控制PWM波的占空比，开关电源的输出电压也会随之变化，即制冷晶片的输入功率发生变化，因此制冷晶片制冷（加热）的功率随PWM波占空比变化，达到自动控温的目的。本系统制冷（加热）效果明显，效率高，界面友好，制作精致，能够胜任题中所定各项要求。(Question in strict accordance with the system parameters and requirements set out to construct a MSP430 microcontroller to control the core temperature control system. The system with the PSB-type negative thermal sensitive resistors as temperature sensors, the method in a class of RF real-time measurement of temperature inside the wooden box, single chip with real-time temperature and the preset temperature value into the PID formula come together on behalf of a temperature increase, then this temperature increment linear wave PWM duty cycle control, switching power supply output voltage will change, that is cooling the chip input power changes, so cooling the chip cooling (heating) power with the PWM duty cycle changes in wave to achieve the purpose of automatic temperature control. The system cooling (heating) effect is obvious, efficient, friendly interface, making sophisticated, capable of the requirements set out in the title.)

设计一个十字路口的交通灯控制电路，要求东西方向车道和南北方向车道两条交叉道路上的车辆交替运行，每次通行时间都设为45秒。时间可设置修改。(Design a crossroads of traffic lights control circuit requires lane east-west direction and north-south direction of the two-lane cross-road vehicles to run alternately, each opening hours are set to 45 seconds. Time can be set to amend.)

七段数码管的显示驱动程序.分查表法和跳转法.采用松翰8位单片机汇编语言编写的子程序, 本人验证过.(seven_segment_tube_display.asm assembly with Sonix 8bit IC)

这是430的一个LCD的驱动程序，对于430的学习有很好的帮助。(This is a 430 LCD driver, have very good help for 430.)

说明：  松翰SN8F5702_PWM_移动电源方案(Songhan SN8F5702_PWM_Mobile Power Supply Scheme)

基于PSCAD软件环境下，利用HVDC Light输电方式下的风力发电系统仿真模型(Based on PSCAD software environment,the mode of the wind power system simulationusing using HVDC Light transmission. )

说明：  教你理解复杂的C-C++声明，十分实用。(Teach you to understand the complex C-C++ statement is very useful.)

stm32学习 十三：RS485总线的使用 十四：TFT屏的图片，中文和字符显示(stm32 learning 13: RS485 bus use 14: TFT screen pictures, Chinese, and character)

又一种抢答器的AT89S51程序， SW1 SW2 SW3 SW4 用数码管显示最先按下的按键 01 02 03 04 并点亮对应灯： D2 D3 D4 D5 显示2S后退出。 同时发出 “嘟”一声。(Yet another answering device AT89S51 procedures, SW1 SW2 SW3 SW4 with digital display by pressing the button the first 01 02 03 04 and light the corresponding lamp: D2 D3 D4 D5 Display 2S exit. Also issued a " beep" sound.)