求89c51单片机制作简易电子琴的c程序及源代码答:5,5,6,5,8,6,5,1,5,3,2,1,2,3,5,5,2,3,1,10,9,8,6,5,5,6,6,5,6,8,10,8,9,0,5,10,9,8,6,5,5,6,6,5,6,10,9,9,10,9,8,6,5,5,8,6,5,3,2,1,0,2,3,5,5,0,5,6,8,-1}, //《七子之歌-澳门》...
用八个按钮控制p1端口使电子琴发出do,re,mi,fa,so,la,si,deo(用单片机...答:T0L EQU 31H ORG 0000H LJMP MAIN ORG 000BH LJMP T0ISR ORG 0030H MAIN:MOV SP,#5FH MOV TMOD,#01H SETB ET0 SETB EA LOOP:MOV DPTR,#FREQ MOV A,P2;控制高中低音区 MOV R1,#0 ANL A,#03H JB ACC.0,LOOP01 MOV R1,#14 SJMP LOOP0 LOOP01:JB ACC.1,LOOP0 MOV R1,#28 ...
微机原理实验箱的电子琴设计,利用8254,8255答:利用PC机内8253驱动内扬声器与键盘1,2,3,4,5,6,7,8设计一个电子琴,通过按数字键响相应的乐符1,2,3,4,5,6,7,ⅰ,使能演奏简单的乐曲。按1~8数字键时同时点亮相应的8个LED灯,使具有声、... 利用PC机内8253驱动内扬声器与键盘1,2,3,4,5,6,7,8设计一个电子琴,通过按数字键响相应的乐符1,2,3,...