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HC-SR501数据输入线接入到GPIO.1上，java代码如下：/* * #%L * ********************************************************************** * ORGANIZATION : Pi4J * PROJECT : Pi4J :: Java Examples * FILENAME : GpioInputExample.java * * This file is part ...

出自：http://www.elecfans.com/soft/69/2008/200804062782.html品 名 极性 管脚 功 能 参 数MPSA42 NPN 21E 电话视频放大 300V0.5A0.625WMPSA92 PNP 21E 电话视频放大 300V0.5A0.625WMPS2222A NPN 21 高频放大 75V0.6A0.625W300MHZ90

#include "reg52.h"#define uchar unsigned char #define uint unsigned int  uchar code FFW[8]={0x01,0x03,0x02,0x06,0x04,0x0c,0x08,0x09};uchar code REV[8]={0x09,0x08,0x0c,0x04,0x06,0x02,0x03,0x01}

#include  #define uint unsigned int #define uchar unsigned char uint i,j;  sbit P32=P3^2;sbit P33=P3^3;sbit P34=P3^4;sbit P35=P3^5;void delay1ms(uint q){unsigned char w;while(q

//用定时器T0查询方式P0口8位控制LED闪烁 T1查询方式P1口8位控制LED闪烁#include        //  包含52单片机寄存器定义的头文件#define uchar unsigned char#define uint  unsigned int/***********************************************************

//用定时器T0查询方式P0口8位控制LED闪烁 T1查询方式P1口8位控制LED闪烁#include        //  包含52单片机寄存器定义的头文件#define uchar unsigned char#define uint  unsigned int/***********************************************************

#include  #define uint unsigned int #define uchar unsigned char uint i,j;sbit P34=P3^4;sbit P35=P3^5;void delay1ms(uint q){unsigned char w;while(q--){for(w=0;w //1ms基准延时程序 {

#include  #define uint unsigned int #define uchar unsigned char uint i,j; main(){i=0;j=0;EA=1; //中断总开关开  ET0=1;//定时器T0中断允许   ET1=1;//定时器T1中断允许  TR0=1;// 启动定时器T0TR1=1;// 启动定时器T1

#include  #define uint unsigned int #define uchar unsigned char uint i,j; main(){i=0;j=0;EA=1; //中断总开关开  ET0=1;//定时器T0中断允许   ET1=1;//定时器T1中断允许  TR0=1;// 启动定时器T0TR1=1;// 启动定时器T1

#include  #define uint unsigned int #define uchar unsigned char sbit P32=P3^2;sbit P33=P3^3;main(){EA=1;IT0=1;IT1=1;EX0=1;EX1=1; P0=0xff; //关闭所有P0口的LED灯P1=0xff; //关闭所有P0口的L

//用LED数码管显示计数器对T0的计数值#include   //包含52单片机寄存器定义的头文件unsigned char Tab[ ]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};  //段码表unsigned int x;sbit P33=P3^3;void delay1ms(unsigned int i)

#include#includesbit fmq=P3^6;  sbit P34=P3^4;  sbit P35=P3^5;unsigned int t; void delay500us(){unsigned char j;for(j=0;j{;}}void beep()//产生1000HZ的频率声音{for(