利用52单片机通过8254定时器实现控制电机的PWM调速程序，可实现开始，停止，加速，减速。

NXP的mifare ultralight　数据手册, 英文版本,完成对电子标签的操作.-NXP" s data mifare ultralight manual, English version, the completion of the operation of electronic tags.

ds1302制作的数码管电子闹钟 显示当前时间，可设定闹钟时间-ds1302 produced electronic digital alarm clock displays the current time control can be set the alarm time

单片机 串行E2PROM24C01扩展-Single-chip Serial E2PROM24C01 expansion

8bit adc This program is free software you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation either version 2, or (at your option) any later version.-8bit adc This program is free software you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation either version 2, or (at your option) any later version.

此为AD转换器ADC0809的资料-this AD converter for the ADC0809

智能吊车，广西壮族自治区电子设计踢 得一等奖-Intelligent cranes, Guangxi Zhuang Autonomous Region, first played in electronic design

在AVR单片机上源程序 bluetooth uart -Source in AVR Single Chip bluetooth uart

带农历显示的万年历,功能齐全，附电路图，可以做产品。-With the Lunar calendar display, complete functions, with schematics, can make products.

研究所积累的资料8,大家秘密使用,千万别告诉别人!-8 Institute of accumulated data, we use a secret, please do not tell others!

C8051F32X的usb文件传输例程，包含c语言和微机语言等-C8051F32X the usb file transfer routines, c contain language and computer language, etc.