8, variable frequency square wave generator with single-chip microcomputer timer design a variable frequency square wave generator, the output 1 Hz ~ 500 Hz frequency range, frequency output precision is 0.5 Hz. Requirements can real-time display current output frequency, can use the keyboard to set the output frequency of square wave generator, has the function of directly set or adjust gradually adjust the resolution and display resolution of 0.5 Hz, free play other circuits.

第八题Sauare_wave_changed V1.2
..............................\1602.c
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..............................\IR.c
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..............................\IR.OBJ
..............................\IR.__i
..............................\main.c
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..............................\main.OBJ
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..............................\maindeal.c
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..............................\maindeal.__i
..............................\Sauare_wave_changed_1.0
..............................\Sauare_wave_changed_1.0.plg
..............................\Sauare_wave_changed_1.0.uvopt
..............................\Sauare_wave_changed_1.0.uvproj
..............................\Sauare_wave_changed_1.0_uvopt.bak
..............................\Sauare_wave_changed_1.0_uvproj.bak
..............................\Sauare_wave_changed_1.hex
..............................\Sauare_wave_changed_1.lnp
..............................\Sauare_wave_changed_1.M51
..............................\STARTUP.A51
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..............................\usart.c
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