可用于任何单片机平台的I2C总线读写程序，IO脚模拟。

用89C51的数控直流稳压电源，含电路图（DDB）以及汇编源程序-89C51 NC with DC power supply, circuit diagram containing (DDB) and the compilation of source code

单片机做的电子密码锁，proteus仿真通过，学习的好资料-Single-chip electronic locks do, proteus simulation adoption, learn good information ...

上车按键后开始计价。有实时时钟、单价、距离和总价钱显示。可以通过键盘修改单价（元/公里）和时间。有清除键用以清楚上次费用。利用LCD分别显示时间、单价、路程和费用。LED辅助显示说做操作。-Button on the bus after the valuation. Real-time clock, unit price, distance, and the total price display. You can modify the keyboard unit price (yuan/km) and time. There is the clear key to clear the last cost. Respectively, using LCD displays time, price, distance and cost. LED auxiliary display saying that operation.

C51编写的用ＩＯ脚模拟串口的源程序,供初学者参考-C51 prepared by serial IO pin analog source, the reference for beginners

C8051f340的UART程序，开发环境Silicon IDE-C8051f340 the UART procedures, Silicon IDE development environment

LPC932用CCU实现PWM-LPC932 CCU with PWM

LCD显示模块C51源程序-C51 LCD display module source

Self-tuning PID Controllers ,有需要的朋友可以参考 !-Self-tuning PID Controllers, there is a need of a friend can refer to the reference!

AVR128的C代码，外部中断，串口中断，IO操作-AVR128 C-code, external interrupt, serial port interrupts, IO operation