汇编程序，利用单片机液晶1602实现数字频率计

VGA视频2*2分配器图纸，protel 99制作。 -VGA Video 2* 2 Distributor drawings, Protel 99 production.

Keil C51 example

VB作上位机,通过跟51单片机通讯,控制家用电器电源的通断-VB for the host computer, through communications with the 51 single-chip microcomputer to control the power-off household appliances

51mcu开发板原理图，天祥电子 -Development board schematics, Intertek e-0000

凌阳单片机以SCAM_2000语音格式播放程序的编写方法-Sunplus MCU to SCAM_2000 voice format player in the preparation method

C51单片机和数码管显示的红外遥控读码器-定时中断数码管显示加遥控-C51 single-chip and digital display of the infrared remote control code reader- regularly interrupted digital display plus remote control

LCD多级菜单具体实现,欢迎下载-LCD multi-level menu realize welcome download! !

网线测试仪程序，可测试网线长度（300M内），排序，用脉冲反波测试，时间*速度=距离的原理。-Cable tester program to test cable length (300M) with sorting, using anti-wave test pulse, time* speed = distance principle.

本系统是一个设计较完善的家用全数字功率放大器。它采用了美国APOGEE公司最新的DDX直接数字放大技术，音质直逼高档模拟放大器，同时，为了扩大使用范围，系统进一步集成了模拟音频输入通道，便于没有数字音频信号的用户使用该系统。操作方面采用了大型的128*64点阵液晶显示模块和非常方便易用的旋转编码器，同时更具有遥控功能。软件方面，以Atmega16单片机核心，采用了全中文菜单显示，由旋转编码器和遥控器作为输入设备，旋转编码器和遥控器均可实现全功能的操作。-This system is a better designed home all-digital power amplifier. It uses the U.S. APOGEE" s latest DDX Direct Digital Amplification technology, sound quality almost equal to high-end analog amplifiers at the same time, in order to expand the scope of application, the system further integrates the analog audio input channels, there is no digital audio signals to facilitate users of the system. Operational use of a large 128* 64 dot matrix LCD display module and very easy to use rotary encoder, but also has a remote control function. Software, in order to Atmega16 microcontroller core, which features a full Chinese menu display by the rotary encoder and remote control as input device, rotary encoders and remote controls can achieve a fully functional operati

at89s52对9313的测试程序，经过验证，能正常使用-at89s52 test procedures for 9313, after verification, to normal use