Through the MCU I/O pin to software-generated square-wave latency, so that the buzzer sounds Keil, C51, Proteus Simulation

Packet : 93317455ljw.rar filelist
ljw
ljw1.c
ljw1.LST
ljw1.OBJ
ljw.c
ljw.DSN
ljw.hex
ljw.lnp
ljw.LST
ljw.M51
ljw.OBJ
ljw.Opt
ljw.plg
ljw.PWI
ljw.Uv2

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