里面是sd程序，非常全面，要的可以下载！

语音芯片PM50八方源代码，在播音函数中写入你需要播音的例子即可播放对应的语音。-voice chip PM50 from all source code, the audio function you need to write radio broadcast of examples corresponding voice.

用单片机开发板实现的液晶显示控制，以单片机的入门学习为主要目的。-MCU development board realize the liquid crystal display controls to SCM entry for the main purpose of learning.

《单片机原理与实用技术》第2章-"SCM principles and practical technology" Chapter 2

内容：1、本程序用于测试4相步进电机常规驱动 2、需要用跳帽或者杜邦线把信号输出端和对应的步进电机信号输入端连接起来 3、速度不可以调节的过快，不然就没有力矩转动了 4、按s4（设置成独立按键模式）可以控制正反转 -Contents: 1, the procedure used to test the four-phase stepper motor-driven two conventional, need to jump cap or the signal output line of DuPont and the corresponding stepper motor signal input terminal connected three speed adjustment can not be too fast, Otherwise, there would be no moment of rotation of the four, according to s4 (set to form an independent key mode) can control the positive inversion

1602的串行输入不用 那么多的引脚就可可以实现1602的读写 显示变量等功能-1602" s serial input pin can not so much can be achieved in 1602 show variable features such as reading and writing

此程序为16位Flash擦除烧写的程序实例,可以在51和avr下的c语言跑通-this procedure to erase 16 Flash burning examples of procedures, and 51 avr in the run-language c

单片机最小系统，使用液晶显示，能够读取键盘值，具有综合扩展功能-The smallest single-chip system, the use of liquid crystal display, the keyboard can read the value of a comprehensive expansion of functions

AD5933评估板下位机程序（keil C）和上位机程序（VB）-AD5933 Evaluation procedures under the plan (keil C) and PC (VB)

IO 口模拟232通讯程序 使用两种方式的C程序 占用定时器0 -IO simulated 232 communications programs use two forms of occupation C program timer 0