Description: Play beep with 89C51, using MCU I/O pins to produce a square wave delay means, and thus make the buzzer sound. Note which took P2_7 do switch, the download is complete press the button need to be vocal
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fengmingqi5.18\fengming
..............\fengming.hex
..............\fengming.lnp
..............\fengming.M51
..............\fengming.Opt
..............\fengming.plg
..............\fengming.Uv2
..............\fengming_Uv2.Bak
..............\蜂鸣器发出1kHz的声音.C
..............\蜂鸣器发出1kHz的声音.LST
..............\蜂鸣器发出1kHz的声音.OBJ
fengmingqi5.18
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