一个很好的例程，希望对您有帮助，欢迎探讨

Java写的门禁系统。 功能包括： 可以凭借密码、胸卡或指纹进入 身份进行验证 监控室通过按钮直接开启 新职员支持密码进入-Access control system written in Java. Features include: can rely on password, badge or fingerprint to verify identity to enter the control room directly through the button to open a new staff to support the password to enter the

蜂鸣器实验beepmusic(arm7平台)-buzzer experimental beepmusic (ARM7 platform 11

电子图书《华中理工大学出的C51教材》，很不错的。-electronic books "Huazhong University of Science and the C51 materials," very good.

三菱16位单片机M306N0系列，A/D转换驱动源码。-Mitsubishi 16-bit microcontroller M306N0 series, A/D converter driver source.

lcd1602与单片机连接实现显示程序，包含电路图-lcd1602 connection with the single-chip display program, including the circuit diagram

基于MSP430F149单片机的PS/2键盘程序，可以读取普通PC键盘上的按键键值。希望读者已了解PS/2的引脚功能。-MSP430F149 MCU-based PS/2 keyboard procedures, which can be read by an ordinary PC keyboard keys on the keypad. I hope readers understand PS/2 pin functions.

EEPROM 24c04其根本是，先往24C02中写数据，然后，读出数据，在数码管中显示，这样直观明了，详细说明，请看程序中注解-EEPROM 24c04 其根本是，先往24C02中写数据，然后，读出数据，在数码管中显示，这样直观明了，详细说明，请看程序中注解

STC89C58RD+系列内部eeprom放数据-STC89C58RD+ Series of internal EEPROM data released

自己的51开发板源代码B，里面包含有LCD1602实验，lcd12864实验，ps2 lcd1602，串口通讯，红外遥控，计算器，继电器控制，矩阵键盘等实验程序，内容丰富-51 development board

电机不转，按下启动键，电机旋转，速度为25转/分，按下加1 键，速度增加，按下减1 键，速度降低，最高速度为100 转/分，最低转带为25 转/分，按下停止键，电机停转。速度值要求在数码管上显示出来。-Motor does not turn, press the start button, motor rotation speed of 25 rev/min, press the 1 key, the speed increase by 1 press the button to lower the speed, the maximum speed of 100 r/min, with a minimum of 25 to r/min, press the stop button to stop motor. Speed value of the requirements in the digital tube display.