使用Keil for arm编译环境的LPC21xx的watchdog（看门狗）的工程示例程序，对使用LPC21XX的单片机开发人员有参考价值。...

单片机在循环显示数字列的同时，采用查询方式控制数字的显示时间和音乐播放的开关。音乐低频信号由定时器采用中断方式产生。-SCM in circulation figures out show at the same time, using figures for the control of time- and the music player switching. Music low-frequency signals used by the timer interrupt way.

基于usb开发板的hid键盘,使用者可根据此代码编写自己的HID设备-development board based on usb hid the keyboard, users can be prepared according to this code of HID equipment

bl55066液晶显示驱动芯片。本程序经过已经使用，本产品我已经开发后投入市场2两年。请大家放心使用。-bl55066 LCD Driver IC. After this procedure has been used, I have developed this product into the market after 2 years. Please rest assured to use.

8051 Absolute Encoder Positioner How to connect and drive absolute position encoder with SSI serial interface. The encoder has been made by Siemens (6FX2001-5FS12). Archive contains: 1) schematic, 2) source in C and Assembler

C8051F120 ISP下载程序，通过串口可以更新程序，实现硬件的自动升级，更新程序大小为62KB-C8051F120 ISP download programs through the serial port can update procedure, automatic hardware upgrades, updates size is 62KB

单片机实现液晶显示程序，对初学者，比较实用-the mcu for lcd display

E2PROM 24c01 c02 程序-E2PROM process 24c01 C02

功能描述： 利用AT89S51单片机的T0、T1的定时计数器功能，来完成对输入的信号进行 频率计数，计数的频率结果通过8位动态数码管显示出来。要求能够对2－40KHZ 的信号频率进行准确计数，计数误差不超过2/1-Functional Description: Using AT89S51 MCU T0, T1 timing counter function, to complete the input signal frequency counting, counting the frequency of 8 resulted in the adoption of dynamic digital tube display. Request to the 2-40KHZ signal frequency accurately count, counting error of less than 2/1

51单片机专用计算器，你可以压缩后得到一个计算器-51 Single-chip dedicated calculator, you can get a compression calculator

SST89C58的IAP功能进行在线下载程序的步骤-SST89C58 the IAP function for online download steps