一个4X4的键盘程序设计，希望能对大家有一定的帮助

ISD4003的子程序,实现语音的录音与播放-ISD4003 of subroutines, voice recording and playback

ADuC848BS32-5驱动ZLG7290键盘控制芯片-ADuC848BS32-5-driven keyboard control chip ZLG7290

对于AT89S52芯片的基于C语言的各种基本小实验的例程！-AT89S52 chip for the C language based on a variety of basic routines small experiment!

周立功公司开发的单片机手册，具体的数据手册见周立功网站下载。-Week Ligong Singlechip developed manual, the specific data manual see Zhou Ligong website.

UCOS2在51上的移植源码。学习UCOS-UCOS2 51 on the transplant source. Learning UCOS

参数整定，用在自动控制系统PID调解中。 代码为实际项目验证过。-parameter tuning, automatic control system used in PID mediation. Code for the actual project tested.

银杏科技有限公司dsp实验开发板的实验程序-Ginkgo Technology Co., Ltd. dsp development board Experimental Experimental procedures

C51中必备的汉字内码提取工具,让单片机很好的输入输出汉字.-C51 in the essential character of the code extraction tool that allows single-chip input and output of Chinese characters very well.

详细讲解定时器、计数器的内部结构工作原理，控制，工作方式，及初始化编程，应用举例-Elaborate on timers, counters working principle of the internal structure, control, work methods, and initialization programming, applications, for example

keil C51 Hello2事例-examples Hello2