stm32f407 手写识别

数字电压表的源程序，可以实现实现测量电路的电压，精确到小数点后面三位数字。附带数字电压表的流程图(Digital voltage meter source, can be implemented to realize the voltage measurement circuit, down to the decimal point three digits.Attached flowchart of digital voltmeter)

NTC热敏电阻计算器（B值、R25、指定温度、指定阻值均可计算，给定四个参数即可计算第五个参数）(NTC thermistors Calculator (B value, R25, specified temperature, the resistance can be specified calculation, four parameters can be calculated given the fifth parameter))

99秒马表，在Proteus设计两个数码管动态显示及一个键盘SP。在ucos下结合keil完成开始时，显示“00”，第1次按下SP后就开始计时。 第2次按SP后，计时停止。第3次按SP后，计时归零。 (99 seconds stopwatch, two in the Proteus design dynamic digital tube display and a keyboard SP. Keil in combination ucos completed under the beginning of the show " 00" , 1st timer after pressing the SP. 2nd by SP, the time to stop. The 3rd by the SP, the time zero.)

这是单片机的一个非常好的一个资料，大家可以参考一下，单片机是个非常有用的入门级的，以后学ARM就非常简单了！学单片机最重要的就是看芯片资料(This is a very good single-chip data, we can refer to the microcontroller is a very useful entry-level, after school ARM is very simple! The most important thing is to learn microcontroller chip information see)

C8051f340 8位pwm波形输出 占空比可调节(C8051f340 8bit output )

关于单片机开发方面的非常难得的书,很强悍的实例开发。(a very rare book on On the microcontroller in the development,the development example is very powerful.)

基于正点原子stm32的频谱 a1读取ad信号显示(Punctuality atomic spectrum based stm32 a1 read signal display ad)

HM20通用型压力变送器 资料很全 值得下载 (HM20 Universal Pressure Transmitter)

模拟PWM信号控制小灯，控制二极管占空比(Analog PWM signal control light)

说明：  keil c usb数据采集系统 at89c5131的固件源代码 及生成软件 支持3个端点 0.1.2(keil at89c5131)