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基于stm32的电子时钟的设计，四个按键控制(Based on stm32 electronic clock design, four key controls)

说明：  精心编写程序模块，关于全国电子设计大赛的资料(Elaborate Programming Module, Information about National Electronic Design Competition)

C51控制ADS1256通过串口显示，已调试通过(ADS1256 C51 control via the UART, debugging through)

英飞凌单片机使用pec中断的ad转换实例完整版(Infineon microcontroller interrupt the ad conversion using pec)

基于stm32f407的sd卡数据读写功能，源码数据(Based stm32f407 the sd card data read and write functions, source data)

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

基于MSP430F5438A的单相SPWM,产生，脉宽可调，波形完美，频率可调(MSP430F5438A-based single-phase SPWM, generation, pulse width adjustable waveform perfect, adjustable frequency)

采用51系列单片机为控制核心，包括电源变换处理及分配模块，恒流源模块，单片机主控模块，键盘输入模块，LCD显示模块，数模/模数转换模块，语音模块和实时时钟模块的9个部分。通过键盘设定好需要输出的电流值后，单片机对设定值按照一定的算法进行处理，经数模输出电压控制恒流源电路输出相应的电流值(51 Series single-chip microcomputer used for the control of the core, including the processing and distribution of power transform module, constant current source module, single-chip control module, the keyboard input module, LCD display module, digital-to-analog/analog-digital conversion module, voice module and real-time Clock Module Part 9. Through the keyboard need to set output current value, single-chip microcomputer according to the settings of the algorithm processing, digital-to-analog output voltage by the control constant current source circuit output current value of the corresponding)

基于stm32固件库的LCD驱动程序，可现实图片(LCD driver based on STM32 firmware library, realizable picture)