markov

BMA150 Driver Microchip Pic Mcus

本包是汤竞南版的51单片机c语言开发与实例，其中包括pdf版的书，和对应书中源码例子，对学习c51开发的初学者很有用。(This package is a version of the 51 Southern Tang King SCM c language and examples, including the pdf version of the book, the book and the corresponding source code examples for beginners learning c51 develop useful.)

this is a digital Oscilloscope that build by me

正弦信号发生器[2005年电子大赛一等奖].files(sinusoidal signal generator [e-Competition in 2005 won first prize]. Files)

实用硬件电路原理图，包括单片机电源设计、放大电路设计和集成稳压电源设计。(Practical hardware circuit, including the MCU power supply design, amplifier design and integrated power supply design.)

用单片机和数码管实现的数据移位功能，供初学者学习使用(With the microcontroller and digital control to achieve the data shift function, for beginners learning to use)

STM8单片机TIM1计数器精确定时后进入中断函数(STM8 microcontroller TIM1 counter precise timing after entering the interrupt function )

通过相应的选择可以提取出正序、负序、零序的电压电流(Positive, negative and zero sequence voltage-current extraction module)

说明：  113、基于51单片机老人生理智能监控GSM短信 本设计由STC89C52单片机电路+火焰传感器电路+加速度传感器+心率传感器电路+SIM800A_GSM模块电路+电源电路组成。 该系统实时监测老人是否跌倒，是否周围有火以及心率情况。 1、如果火焰传感器检测到火焰，则GSM向特定手机发送：Fire！ 2、如果ADXL345检测到老人跌倒了，则GSM向特定手机发送：Fall！ 3、如果心率传感器检测到老人心率高于120，则GSM向特定手机发送：High Heart！ 4、注意本设计一次上电上述情况每个只能触发一次上报短信，不会连续发送，防止反复发送，请放心使用。 5、短信处理过程有GSM信号灯指示。 6、GSM模块是SIM800A，该模块和SIM900A电路程序完全兼容外观外形一模一样。(GSM SMS for elderly physiological intelligent monitoring based on 51 MCU This design consists of STC89C52 MCU circuit + flame sensor circuit + acceleration sensor + heart rate sensor circuit + sim800a_ GSM module circuit + power supply circuit. The system monitors whether the elderly fall down, whether there is fire around and heart rate in real time. 1. If the flame sensor detects a flame, the GSM sends: fire! 2. If adxl345 detects that an old man has fallen, the GSM sends a specific mobile phone: fall! 3. If the heart rate sensor detects that the heart rate of the elderly is higher than 120, the GSM sends a message to a specific mobile phone: high heart! 4. Pay attention to the design of a power on, each of the above conditions can only trigger a report SMS, will not be sent continuously, to prevent repeated sending, please rest assured to use. 5. SMS processing process is indicated by GSM signal light.)

单片机开发与概述（7---9）希望大家喜欢(Single-chip development and overview (7--- 9) hope you like)