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这是一个实现AVR单片机的SPI应用示例程序(This is a realization of AVR MCU SPI application sample programs)

数字表，自动安秒计数，自带按键停止，清零功能。适用于51系列单片机(digital clock asm file for 51.)

说明：  STM32如何配置成FSMC方式，控制显示LCD显示字符(STM32 FSMC driving LCD)

应用于线性代数计算的小程序，C语言编程。可进行行列式计算、代数余子式值、矩阵的加减乘除、求逆、求秩等计算(Applied linear algebra applets, C language programming. Determinant can be calculated, the value of algebraic, matrix addition and subtraction, multiplication and division, inverse, rank, etc. demand computing)

三相脉宽调制电流型整流器，可以用来实现单位因数功率运行。(Three phase PWM current source rectifier ，Can be used to achieve unity factor power operation. )

文以永磁同步电机为对象，采用矢量控制方案，首先我们研究了基于PI 的控制算法，在仿真基础上指出了PI 算法存在的一些不足。 在此基础上我们研究了基于扩张状态观测器（ESO）前馈补偿和线性比例反馈控制的永磁同步电机速度环控制算法， (Taking PMSM as the controlled plant, this paper studies the control system based on vector control, first, the servo control scheme based on PI control law is studied. Some limitations of PI based control scheme are pointed out. )

ADE7758三相多功能电能计量 IC 中文手册，美国模拟器件公司(Three-phase Multifunctional Energy Metering IC ADE7758 Chinese Manual, Analog Devices Inc.)

了解SINAD、ENOB、SNR、THD、THD + N、SFDR，不在噪底中迷失。用于定量表示ADC动态性能的常用指标有六个，分别是：SINAD(信纳比)、ENOB(有效位 数)、SNR(信噪比)、THD(总谐波失真)、THD + N(总谐波失真加噪声)和SFDR(无杂散动态 范围)。(Learn SINAD, ENOB, SNR, THD, THD+ N, SFDR, lost not noise floor. For quantitative expression commonly used indicators of the dynamic performance of the ADC six are: SINAD (SINAD), ENOB (effective number of bits) and SNR (signal-to-noise ratio), THD (total harmonic distortion), THD+ N ( The total harmonic distortion plus noise) and SFDR (spurious-free dynamic range).)

这是一个虚拟串口和红外口的例子的源代码。(This is a virtual serial port and infrared mouth of the source code examples.)

脑中可以在特定的时间响起。设置闹钟定时可以响起，(Set alarm timing can ring)