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DHT11的C51驱动程序，4位数码管可以显示温度和湿度，带一触发按键(DHT11 C51 driver, four digital tube can display temperature and humidity, with a trigger button)

用单片机产生频率，占空比可调的方波，这是C语言的原代码。(Produced with single-chip frequency, variable duty cycle square wave, which is the C language source code.)

打孔机主要用于在制造印刷线路板流程中的打孔作业。本问题旨在提高某类打孔机的生产效能。 打孔机的生产效能主要取决于以下几方面：（1）单个过孔的钻孔作业时间，这是由生(this is a new suan fa ofaa)

Att7022计量芯片源程序，ATT7022是一款高精度三相电能计量芯片，适用于三相三线和三相四线的应用。(Att7022计量芯片源程序，ATT7022是一款高精度三相电能计量芯片，适用于三相三线和三相四线的应用)

本程序用于求解以网损、电压偏差、投资运行费用最小为目标的配电网分布式能源选址定容问题，并辅以相关文献。(This procedure is used to solve the loss, voltage deviation, minimum operating cost investment objective distribution network of distributed energy locating and sizing issues, supplemented by relevant literature.)

通过51单片机串行转并行，扩展IO口，实现四个步进电动机的控制。(By 51 microcontroller serial to parallel IO expansion port, to achieve four stepper motor control.)

基于VC++6.0应用MSCOMM控件的串口通信上位机程序,实现与51单片机的通信(Based on VC++ 6.0 Application MSCOMM control PC serial communication procedures, with 51 single-chip communication)

中航信ETERM放大器，C++ 支持350，443端口，分享一下，一起学习(CNAC letter ETERM amplifiers, C++ 350,443-port, share, learn together)

单片机系统中自制硬件字库的应用.. 汉字字库(SCM system hardware homemade Chinese character font application ..)

本文介绍一种利用单片机本身所提供的串行通讯口，采用自定义串行通信协议，加上总线驱动器如MAX481、MAX483、MAX485、MAX487等组合成简单的RS－485通讯网络，完成单片机间的多机通讯。(This article describes a serial communication port provided by the microcontroller itself, the custom serial communication protocols, coupled with the bus driver, such as the MAX481, MAX483, MAX485, MAX487, combined into a simple RS-485 communication network, complete single-chip between themulti-machine communication. )