2×2 VGA视频分配器图纸，Protel 99生产。

红外遥控接收 ORG 0000H LJMP START 转入主程序 ORG 0010H START: MAIN: JNB P2.2,IR LJMP MAIN 以下为进入P3.2脚外部中断子程序，也就是解码程序 IR: MOV R6,#9 SB: ACALL DELAY882 调用882微秒延时子程序 JB P2.2,EXIT 延时882微秒后判断P3.2脚是否出现高电平如果有就退出解码程序 DJNZ R6, SB 重复10次，目的是检测在8820微秒内如果出现高电-infrared remote control receiver ORG 0000H LJMP START into main program ORG 0010H START : MAIN : JNB P2.2, IR LJMP MAIN below to enter P3.2 foot external interrupt subroutine, which is decoding procedures IR : MOV R6, SB# 9 : Calling ACALL DELAY882 882 microsecond delay subroutine JB P2.2, EXIT 882 microsecond delay after the judgment whether there P3.2 feet to I quit if decoding procedures DJNZ R6, SB repeated 10 times, the purpose is to test if within 8,820 microsecond high

基于pic单片机的嵌入式系统的以太网通信的软件程序，可以实现pic单片机以太网开发板的网络功能，以及学习TCP/IP协议栈的使用方法-Pic based on the Embedded System Single Chip Ethernet communications software program, can achieve single-chip Ethernet development board pic of network functions, as well as learning TCP/IP protocol stack to use

DTMF双向收／发集成电路MT8880专门为双音频信号的收、发而设计，它既能产生发送双音频信号，又能对双音频信号进行接收译码，还能判断各种信号音(拨号音、回铃音、忙音)。以上就是它的应用电路和程序-Two-way DTMF collection/fat MT8880 IC specifically for the dual audio signals received, the design, it could have sent dual audio signal, while the dual audio signal decoding receiver, but also to judge the sound signal (dial tone , ring back tone, busy tone). Above is its application circuit and procedures

4*4扫描键盘,通过键值通过4个数码管显示出来.-4* 4 Scanning keyboard, through key through four digital tube display.

程序资料共享 希望大家共同进步 共同努力 加油 ！-Procedures for the sharing of information would like the common progress of the joint efforts of U.S. refueling!

ping utility used for pinging proxy

用单片机实现在LED点阵上显示汉字，用C语言编写，用kile编译，再烧录在89S52上-MCU on the LED dot matrix display Chinese characters, using C language, compiler used kile, then burning on the 89S52

在单片机中，处理串口的子程序-in SCM, the serial processing subroutine

无线传感器网络低占空比MAC协议研究 介绍MAC协议-mac protocol

基于并口的SPI总线93CXX的读写程序-This is a programm for SPI chip 93cxx in use of parral port