这是一个BCD码的加法的实现程序..用途很广在单片机领域

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.

avr单片机，对目标板的编程，测试显示灯，发送串口返回值-avr microcontroller, the target board programming, testing lights, sending serial return values

单片机结合简单外围计数电路设计的频率计，内附电路和c源代码-Single-chip combination of a simple design of the external counting circuit frequency meter, enclosing the circuit and c source code

可用于 51系列单片机与触摸屏之间的通讯 （一般用modbus实现通讯）-design for exchange massage both mcu51 and torch pad

lpc2104驱动PG160128A点阵液晶源程序

例子Proteus经典例子和中文资料 8051-Examples of classic examples of Proteus and Chinese information 8051

温度控制识别 温度控制识别 -fjdkjafkljdljalfld

LCD图形显示函数，很使用！-LCD display function, is used!

基于CY7C68013A的mouse+keyboard混合USB外设应用范例。本套代码使用多个报表描述符实现复合设备。与之相对的另一种方案是使用多个interface，该方案另行上传。-This project focuses on building a mouse+ keyboard hybrid USB device with the popular Cypress CY7C68013A chip. Implementation is based on a multiple ReportDescriptor solution. Please refer to CY3684 dev kit documentation for more details regarding hardware platform.

C8051F06X单片机编程，UART模块代码-C8051F06X Microcontroller Programmer, UART module code