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ST的异步串口芯片4通道芯片资料,扩展RS232、RS422、485的好方法(ST16C554 chip uart)

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).)

二氧化锆氧气传感器的氧气含量测量程序（此程序已经应用到产品）(Procedures for the measurement of oxygen content of two zirconia oxygen sensor (this procedure shall be applied to the product))

详细描述了基于ADSP-21262的数字压限器的设计，给出了算法流程，可以根据其描述进行实现(A detailed description of the ADSP-21262 digital limiter based design, flow chart of the algorithm is given, according to the description of implementation)

南邮电赛程序，利用8051MCU向E2PROM（24c168）存储数据。(South Post race program, the use of 8051MCU to E2PROM (24c168) store data.)

该程序是8位的51单片机的喇叭滴答响声程序(The program is eight horn of 51 single-chip microcomputer, ticking program)

说明：  emWIN,解决64位机不能使用软件工具的尴尬，可以说是前期版本的升级版5.22版本(EmWIN, to solve the embarrassment of 64-bit computers not using software tools, can be said to be the upgraded version of 5.22 version of the previous version.)

说明：  51单片机蜂鸣器音乐播放器的头文件，可自己更改旋律(51 MCU buzzer music player header file, you can change the melody)

超声波测距（5 28线性处理）,测量线性度很高(Ultrasonic Ranging (528 linear processing), high linearity measurements)

说明：  stm32f103zet6 使用freertos，在IAR平台下开发，队列例程(stm32f103zet6 freertos)