用89c51做这样一个激光钢琴,r1r2r3r4r5分别为5个光敏电阻,有激光照着,当手阻挡光线后
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2024-05-26 17:05:41
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spk equ p3.7 t0h equ 30h t0l equ 31h key1 equ p1.7 key2 equ p1.6 key3 equ p1.5 key4 equ p1.4 key5 equ p1.3 org 0000h ljmp main org 000bh ljmp t0**r org 0030h main: mov sp,#5fh mov tmod,#01h setb et0 setb ea mov dptr,#freq loop: ** key1,loop1 mov a,#0 sjmp loop5 loop1: ** key2,... 20210311