菜鸟想请问一下各位高手 图中四位数码管与51单片机相连的1234四个脚...答:// 数码管与51单片机相连,实物与仿真图一样连接就可以,也可以在A~G、DP线上串一个300欧姆的电阻。include<reg52.h> define uchar unsigned char uchar code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,};//数组0到F uchar ...
51单片机设计,求用一个按键能显示一个七段数码管1~7的c语言程序。_百 ...答:include<reg51.h> define uchar unsigned char uchar table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f};sbit key=P1^0;main(){ uchar i,key;i=1;while(1){ P1=table[i];if(key==0){ while(key==0);i++;if(i>7)i=1;} } } ...
利用一只数码管间隔1s循环显示0-9是51单片机答:为方便起见,令数据,PORT1 POR2分别为,I/O口PA,PB的地址 PA连八盏灯,PB只连两盏 AGAIN:MOV AL,01H AGAIN1:MOV DX,PORT1 OUT DX,AL INC AL JO AGAIN2 JMP AGAIN1 AGAIN2:MOV AL,01H AGAIN3:MOV DX,PORT2 OUT DX,AL INC AL TEST AL,04H JZ AGAIN JMP AGAIN3 我只写了程序段,...