2FSK-digital-communication-system

实现交通灯南北东西方向红灯、绿灯和黄灯的交替变化。(Traffic lights )

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. )

以c51单片机为核心，利用1760芯片进行语音报时，51单片机控制(With c51 microcontroller core, the use of 1760 chip for voice timekeeping, 51 MCU control)

在单片机上运行的简单的颜色跟踪算法,中文注释(Running on the microcontroller simple color tracking algorithm, Chinese Notes)

新中新小一卡通标准对接服务SDK，拥有它完全可以自行定制业务软件(The Synjones ConCard TPE SDK)

计时器,实现时钟计时(reckon by time)

单片机播放 音乐 是学习的好资料 音频学习

PWM调光 1、学习目的：利用定时器产生PWM，了解原理和使用方法 2、硬件要求：LED灯 定时器 3、试验现象：LED灯由亮到灭，由灭到亮逐步变化，也就是调光现象(PWM dimming, learning objectives: the use of the timer to generate PWM understand the principles and use hardware requirements: LED lamp timer test phenomenon: LED lights from bright to off, gradually changes from off to bright, that is, adjusted optical phenomena)

12864液晶显示屏、画图、显示中文、文字取模软件( 12864 LCD display, drawing, show Chinese characters modulo Software)

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.)