代码搜索:KeyScan
找到约 2,231 项符合「KeyScan」的源代码
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c keyscan.c
/**************************************************************
4*4 Key Scan
**************************************************************/
#include "def.h"
#include "option.h"
#include "2440a
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o keyscan.o
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txt keyscan.txt
简洁高效的键盘扫描程序(单片机)/********************************************************************
*
* 函数原型:byte K_input(void);
* 功 能:4×4键盘扫描程序
* 返 回:键序号(0~F),0xFF表示没有字符输入
*
*
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obj keyscan.obj
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lst keyscan.lst
C51 COMPILER V8.05a KEYSCAN 08/28/2007 12:29:09 PAGE 1
C51 COMPILER V8.05a, COMPILATION OF MODULE KEYSCAN
OBJECT MODULE PLACED I
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h keyscan.h
#ifndef __KEYSCAN_H__
#define __KEYSCAN_H__
unsigned char ucKeyScan(); //键盘扫描程序
#endif
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c keyscan.c
//*************************************************************************************************
//*************************************************************************************************
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c keyscan.c
#include #include
unsigned char code table[]={0xc0,0xf9,0xa4,0xb0,
0x99,0x92,0x82,0xf8,
0x80,0x90,0xa0,0x83
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v keyscan.v
//4X4键盘扫描防抖电路
module keyScan( rst, //异步复位
clk, //1k时钟输入
keyIn, //键盘读入
scan, //扫描输出
keyPressed, //按键有?输出
code); //编码输出0-f 对应SW0--SWF
input rst,clk;
input [3:0] keyI
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