笔者的《用M8L制作的89S51单片机 USB下载线》在无线电2007年第9期已刊登过，现将制作的源码上传，供大家学习！...

单片机的Demo，可以在单片机上演奏音乐 用汇编语言的写的

RTL8139 Series PCB Layout Guide

万年历挂钟智能系统设计开发环境为ICC,可以编译成汇编,直接下栽到嵌入式avr单片机进行控制-calendar wall clock intelligent system design and development environment for the ICC, can compile a compendium, Embedded directly to the downward avr microprocessor control

点阵显示汉字程串口输出字符数据，P2口输出行扫描信号,P0_0输出595锁存信号-Dot-matrix display Chinese characters-way serial output data, P2 I scan signal output line, P0_0 latch 595 output signal

常用PIC系列单片机速查表，有PIC的C系列，F系列以及HV系列等等,-PIC MCU速查表commonly used, have PIC C-Series, F Series and the HV series, etc.

这是一个对单片机IO口，进行操作的程序，有助于对单片机硬件的了解-failed to translate

用C8051F040实现DA（模拟-数字）变换。C8051F040集成了12位精度的DA转换器。-With the C8051F040 to achieve DA (analog- digital) conversion. C8051F040 integrates a 12-bit accuracy of the DA converter.

介绍智能车，很全面，是入门很好的培训资料-Introduce smart car, it is comprehensive, it is very good training information portal

利用单片机、HD7279、键盘，实现计时器、倒计时器。-The use of single-chip, HD7279, keyboard, realize the timer countdown device.

51单片机的4层电梯控制源代码，有需要的可以参考一下-51 SCM four-layer elevator control source code, there is a need that can refer to