使用单片机C语言编的单片机实验板与上位机的串口通信（可接收上位机命令和根据命令给上位机上传上位机需要的数据）程序，可供单片机开发人员参考。...

单片机P1口与4个按键连接，用于信号幅度和频率调节操作键。单片机P0、P2.7、P3.6(-WR)与DA0832、2个741(运放)连接构成波形信号输出电路。 编程使波形信号输出电路输出正弦波信号，并且可通过操作键调节信号的幅度和频率。幅度和频率调节级别从0~10，共11个等级。 -Singlechip P1 I connect with the four buttons for the signal amplitude and frequency adjustment operation keys. Singlechip P0, P2.7, P3.6 (-WR) and DA0832, 2 months 741 (operational amplifier) to connect constitute waveform signal output circuit. Programming so that waveform signal output circuit output sine wave signal, and can be operated keys adjust the signal amplitude and frequency. Amplitude and frequency adjustment level from 0 ~ 10, a total of 11 grades.

C8051 link philips TV tuner.

系统以AT89S51单片机为核心，利用单片机可根据实际的需要随时更改程序而实现功能的改变。包含程序和课程设计文章-AT89S51 microcontroller system to the core, the use of single-chip microcomputer according to actual need to change procedures and the achievement of functional change. Contains the procedures and curriculum design articles

... 本书详细介绍了PHILIPS公司最新、最常用的内置ISP下载功能的64KB大容量Flash存储器 和特大RAM的P89C6xX2 6/12时钟低价单片机的原理；同时还用大量篇幅 ... 编号：9006] 单 片机C程序设计及应用实例 查看详细信息 作者：胡伟季晓衡出版日-... the book details the latest PHILIPS, the most commonly used built-in ISP download the 64KB large-capacity Flash memory and large RAM P89C6xX2 6/12 low-cost MCU clock principle; Also great length ... Number : 9006] microcontroller C- sequence Design and Application View detailed information Author : HU quarter Xiaoheng publication date

对数字语音系统的开发有帮助 包含常用资料，开发程序，及调试报告等-right digital voice system development are used to help contain information on the development of procedures and debugging report

自编的C51串口通讯程序，在AT89C51上测试运行OK，用22.1M晶振最高可跑115KBPS-directed the C51 serial communications procedures, the AT89C51 OK on the test run, with a maximum 22.1M crystal run 115KBPS

单片机USB接口驱动,适用于AT89C51SND1C-SCM USB drive, applicable to AT89C51SND1C

PS7219单片机显示的源程序-PS7219 show the source SCM

这是一个基于89C51单片机的简易信号发生器的源程序，程序代码由C语言编写-This is an 89C51 microcontroller based on the simplicity of the source signal generator, code written in C

基于等精度测频原理，设计的等精度频率计，测试结果很精确，达到0.01HZ。-Such as the accuracy of frequency measurement based on the principle of design, such as precision frequency meter, test results are accurate to 0.01HZ.