Frequency-Meter

ist3931 spi driver for ist3931 ic(ist3931 spi driver for ist3931)

说明：  官方AD7793参考程序，采用stm32f103(The official AD7793 reference program uses STM32F103)

本软件是STM32f407芯片的ADC操作软件，采用DMA方式。我已经测验了在STM32f407开发板。为了STM32f开发，很有用的软件(This software is the STM32f407 chip ADC operating software, using DMA mode. I ve been testing the STM32f407 development board. In order to STM32f development, very useful software)

基于单片机的数控可调直流电源，附源程序和电路图，及文档说明，源程序采用C语言编写(NC-based single-chip adjustable DC power supply, with source code and schematics, and documentation shows that the use of C language source)

LPC1788驱动群创AT070TN92LCD屏源码(LPC1788 LCD test on AT070TN92)

lingo学习教程。主要用于优化设计，确定最优方案，分析各分量的约束条件。(Lingo learning tutorial. Mainly for the optimization design, determine the optimal scheme, analysis of the components in the constraint condition. )

iap_sst89c58.zip:--------SST89C58/54单片机的iap在线编程/在线下载监控程序源程序(KC51)(iap_sst89c58.zip :-- SST89C58/54 SCM IAP online programming/online download monitoring program source (KC51))

一个简易秒表程序，可以帮助学习单片机定时器功能的朋友理解定时器用法，有按键控制运行暂停等(A simple stopwatch program that can help you learn microcontroller timer function usage timer understanding friend , there are buttons to control operation pause)

STM32F407工程模板，基于官方固件库，无操作系统版(STM32F407 engineering template, based on official firmware library, no operating system version)

基于51单片机 DDS 的信号发生器设计 （有源代码）(51 MCU-based design of DDS signal generator (source code))