eil PWM based on 51 single-chip microcomputer as a frequency meter program and Need a comparator chip, one end being measured, end PWM output, the input comparator output

51频率计\asdf
........\asdf.DSN
........\asdf.hex
........\asdf.lnp
........\asdf.M51
........\asdf.Opt
........\asdf.plg
........\asdf.PWI
........\asdf.Uv2
........\asdf_Opt.Bak
........\asdf_Uv2.Bak
........\display.c
........\display.h
........\display.LST
........\display.OBJ
........\includes.h
........\Last Loaded asdf.DBK
........\lcd1602.c
........\lcd1602.h
........\lcd1602.LST
........\lcd1602.OBJ
........\LCD_Config.h
........\LCD_Dis.c
........\LCD_Dis.LST
........\LCD_Dis.OBJ
........\main.c
........\main.h
........\main.LST
........\main.OBJ
........\pwm.c
........\pwm.h
........\pwm.LST
........\pwm.OBJ
........\PWM_AD.LST
........\PWM_AD.OBJ
........\STARTUP.A51
........\STARTUP.LST
........\STARTUP.OBJ
........\STC12C5A.h
........\test.c
........\test.LST
........\test.Opt
........\test.plg
........\test.Uv2
........\test_Uv2.Bak
........\time.c
........\time.h
........\time.LST
........\time.OBJ
........\uart.c
........\uart.h
........\uart.LST
........\uart.OBJ
........\电路图\51dip40.SchDoc
........\......\51dip40.SchDocPreview
........\......\chip.PcbLib
........\......\chip.PcbLib.htm
........\......\LCD82.SchLib
........\......\Motorola Analog Comparator.PcbLib
........\......\Motorola Analog Comparator.SchLib
........\......\PCB1.PcbDoc
........\......\PCB1.PcbDoc.htm
........\......\PCB1.PcbDocPreview
........\......\PCB_Project1.PrjPCB
........\......\PCB_Project1.PrjPCBStructure
........\......\Sheet1.SchDocPreview
........\......\STC12C5A60S2.SchLib
........\电路图
51频率计

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