Tested in double-MCU communications, tried, results were pretty good ~ ~ ~ one side to the button, while LED display key ~ ~ ~ SCM: STC89C58R+

580单片机间通信——按键输入数据
...............................\key.h
...............................\my_pro.h
...............................\stc2
...............................\stc2.c
...............................\stc2.hex
...............................\stc2.LST
...............................\stc2.M51
...............................\stc2.OBJ
...............................\stc2.Opt
...............................\stc2.plg
...............................\stc2.Uv2
...............................\stc2_Opt.Bak
...............................\stc2_Uv2.Bak

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