本方法的基本思想就是利用单片机具有的PWM端口，在不改变PWM方波周期的前提下，通过软件的方法调整单片机的PWM控制寄存器来调整PWM的占空比，从而控制充电电流...

基于MCS―51系列单片机I/O口的按键和显示程序. -Based on MCS-51 series single-chip I/O port of the keys and display procedures.

DAC0832显示波形-DAC0832 displayed waveform

ok very good os

LPC2119芯片中CAN数据转232数据源码程序，请下载的兄弟们参考。-LPC2119 chip CAN data transfer 232 of data source program, please download the brothers as a reference.

C51写的串口编程的范例，写串口的兄弟可以参考！-C51 write serial programming paradigm, write serial port can refer to the brothers!

3510基于avr的测试程序 建议连接方式： 开发环境：Winavr 版本 ：1.0 MCU ：Mega16 晶振 ：8M 调试环境：AVR Studio-3510 based on the proposed test procedures avr connection: Development Environment: Winavr version: 1.0MCU: Mega16 crystal: 8M debugging environment: AVR Studio

远程遥控家电，用到了串口程序，键盘程序，LCD显示程序等等，非常不错的程序。比较有参考价值。-Remote control home appliances, use a serial process, the keyboard program, LCD display program, etc., are very good procedures. Have reference value for comparison.

过负荷记录仪器分为单片机数据采集器和微机数据分析记录数据库软件两部分。 仪器具有监视变压器负荷电流（通过改变传感器也可记录最低电压）并自动记录过负荷电流出现的开始时间，最大值和结束时间的功能。当前版本可保存150次的过负荷数据。并可根据需要扩充。pc机软件具有和仪器通信的能力，能够把仪器采集的数据集中保存，并能进行查询，统计等处理。使用本仪器可以定量分析变压器的过负荷情况。 本原码为PC机部分,使用了串口通信和数据库技术 -Overload apparatus records are divided into single-chip data acquisition and data analysis microcomputer database software records in two parts. Surveillance equipment with transformer load current (by changing the sensor can also record the minimum voltage) and automatically recorded the load current emerging start time, maximum and end times of the function. 150 to save the current version of data overload. And in accordance with the need to expand. pc software and equipment with communication capability to the instrument collected data centrally stored, and can query, statistics and other treatment. Use of the device which can be quantitative analysis of transformer overload situation. Primitive machine code for the PC part, the use of the serial communications and d

瑞萨7709系列高档单片机串口通信的工程文件，实现简单的单片机与PC之间的串口通信-Renesas 7709 series high-end single-chip serial communication engineering documents, to achieve a simple and single-chip serial communication between PC

C51 CAN开发测试软件和驱动程序，带相关开发文档-C51 CAN development and testing of software and drivers, with the development of relevant documents