i2c

基于FRDM-KL25Z及简单运放（LM324）设计出了一套小巧、低成本的心电监测装置。它不但能够结合上位机实时显示心电图而且能够将采集的心电信号储存于SD卡，用于24h心电监护，以备观察不同时间段心血管疾病的症状。(FRDM-KL25Z and simple operational amplifier (LM324) based on the designed ECG monitoring device with a set of small, low cost. It can not only combine with the real-time display of the host computer and can store the collected ECG signals in SD card for 24h ECG monitoring for the observation of the symptoms of cardiovascular diseases at different time periods. )

超声波模块的使用，包括和单片机通信 可以实现超声波测距(The use of ultrasonic modules, including communication can be achieved and the microcontroller Ultrasonic Ranging)

针对RN8209新型电表计量芯片的校表软件，使用DLT645-2007通讯协议(RN8209 for new electricity metering chip calibration software, communications protocols using DLT645-2007)

单片机程序控制实现函数发生器的功能，在函数发生器中起主控制作用(SCM process control functions to achieve the function generator, function generator in the role play the main control)

蓝宙电子OLED显示屏模块资料 landzo_OLED液晶屏V1.3原理图等资料(lanzo OLED)

direct sparse solver for linear equations

1602显示源程序 基于51单片机的1602显示矩阵按键键值 按下矩阵键盘显示对应按键号(1602 Display source program,Based on 51 MCU, 1602 display matrix button key value, press matrix keyboard and display corresponding key number.)

89c52的串口通信的演示 (89c52 serial communication demonstration)

MultiThread DB - ADO CMTDaoDatabase CMTDaoRecordset

说明：  vb与plc通讯帮助解决vb与plc通讯之间的问题(vb and Communications plc)