文章借助系统模型，阐明了GSM模块收发短信的基本概念以及串口控制SMS的基本原理。详细介绍了单片机控制GSM模块工作的软件实现过程，对对怎样用单片机控制GSM模...

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这是一个51系列单片机控制加热温度的程序，使用了pid算法。-This is a 51 series single-chip microcomputer to control the heating temperature of the procedures, the use of pid algorithm.

128*64液晶屏与单片机的接口程序,液晶屏控制芯片为ks0107,ks0108,实现汉字图形等的显示,其它屏编程思想亦此-128* 64 LCD screen and MCU interface, LCD screen controller chips for ks0107. ks0108 achieve Chinese graphics display, the other screen programming also thinking this

由8051组成的单片机系统通常情况下，P0口分时复用作为地址、数据总线，P2口提供A15-A8即高8位地址，P3口用作第二功能，只有P1口通常用作I/0口。P1口是8位准双向口，它的每一位都可独立地定义为输入或输出，因此既可作为8位的并行I/O口，也可作为8位的输入输出端。当工作在输入方式时，对应位的锁存器必须先置1,才能正确地读到引脚上的信号,否则,执行读引脚指令时,若对应位的锁存器的值为0，读的结果永远为0。-By 8051, composed of single-chip microcomputer system under normal circumstances, P0 timeshare I reuse as address, data bus, P2 I provide A15-A8 high eight address, P3 mouth for the second function, I usually only P1 for I/0 I. P1 I was eight quasi-two-way port, it can be independent of each and every defined as input or output, it can be used as 8-bit parallel I/O port, can also be used as 8-bit input and output side. When the work in the input, the corresponding bit latch must first buy one in order to correctly read the signal pin, or pin the implementation of reading instruction, if the corresponding bit latch the value of 0, Reading the results of Forever to 0.

pid，用于飞思卡尔智能车比赛，学习资料-pid, for Freescale" s Smart car

RS485通信程序，采用ModBus协议，注解详细，学习ModBus的好文档-RS485 communication program using ModBus protocol, detailed notes, good documentation of the study ModBus

风机控制器智能程序2,请大家自己使用,千万不外传!-Intelligent fan controller procedures for two, let us own use, do not Gaiden!

用upd6464 给TV信号 加叠加字符 -add osd for TV signal with upd6464

IO 口模拟232通讯程序 使用两种方式的C程序 占用定时器0 -IO simulated 232 communications programs use two forms of occupation C program timer 0

16位10进制加法程序，KEIL51编写，适合单片机 -16 10 hex addition procedures, KEIL51 preparation for SCM