an alarm sounded a siren procedures procedures

51单片机的IIC总线先测试程序，C语言编写，很实用的！-51 MCU IIC bus test procedures, C language, it is useful!

万龙开发板的原理图和pcb图，仅供交流和学习用。-Wanlong development board schematic and pcb map, only with communication and learning.

基于AVR的 8*8 LED点阵显示源代码-based on the AVR 8* 8 LED display system source code

在AVR上实现USB的功能，是模拟出的USB-In the AVR to achieve USB functionality of USB is to simulate the

该时钟以24小时制显示时间，并可显示2000年至2049年之间的任何日期及星期，日期与时间经按键可相互切换，可输入8个闹钟时间设置，每个闹钟设置包括响铃的时间（小时与分钟）、对工作日有效还是对周末有效的标志，以及本项设置是否启用的标志等三部分。这8个闹钟设置均保存在EEPROM中，即使掉电也不用重新输入。-The 24-hour clock to display time, and shows from 2000 to 2049 and any date between the weeks, the date and time as may be mutually switch button, enter the eight alarm time settings, each set including the ringing of an alarm clock Duration (hours and minutes), the effective working days or weekends effective road signs, as well as whether or not to enable this setting, such as a symbol of three parts. This 8 alarm settings are stored in EEPROM, even brown-out do not have to re-enter.

胜华 LCD 2.8寸,配NT7787的显示驱动程序源代码.-Wintek LCD 2.8 inch display with NT7787 driver source code.

使用C语言编写单片机液晶显示程序，此程序是对于AT89S52单片机的程序源码。只需通过编译来生成HEX文件-Using the C language SCM liquid crystal display program, this program is the program source code for the MCU AT89S52. Simply by compiling to generate the HEX file

80C51单片机中结合555电路实验和单片机定时器频率计实验，里面包含555定时器的datasheet和实验源程序-80C51 single-chip integration of 555 timer circuit experiments and the frequency of single-chip experiment, which contains 555 timer datasheet and experimental source

AVR单片机ATmega16 开发环境ICC 电梯控制模型 (原创) 测试成功-ATmega16 development environment AVR Singlechip ICC elevator control model (original) test successful

ADI低成本心电监护模块（ECG module）设计-ADI low-cost ECG monitoring module (ECG module) design