This is because I use C programs written in human-computer interaction, which includes key scanning. LCD display program.

人机交互\BEEP.C
........\BEEP.LST
........\BEEP.OBJ
........\GB_Table.lst
........\GB_Table.obj
........\Get_Key.h
........\Key_Data.c
........\Key_Data.LST
........\Key_Data.OBJ
........\LCD_ASCII.lst
........\LCD_ASCII.obj
........\LCD_Dis.lst
........\LCD_Dis.obj
........\LCD_Driver_User.lst
........\LCD_Driver_User.obj
........\main.c
........\main.LST
........\main.OBJ
........\main.txt
........\MCS51_MzL05_Base
........\MCS51_MzL05_Base.hex
........\MCS51_MzL05_Base.lnp
........\MCS51_MzL05_Base.M51
........\MCS51_MzL05_Base.Opt
........\MCS51_MzL05_Base.plg
........\MCS51_MzL05_Base.Uv2
........\queue_error_0
........\queue_error_1
........\STARTUP.A51
........\STARTUP.LST
........\STARTUP.OBJ
........\Text1.txt
........\UART.c
........\UART.LST
........\UART.OBJ
........\LCD_Driver\GB_Table.c
........\..........\LCD_ASCII.c
........\..........\LCD_Config.h
........\..........\LCD_Dis.c
........\..........\LCD_Dis.h
........\..........\LCD_Driver_User.c
........\..........\LCD_Driver_User.h
........\..........\LCD_PortConfig.h
........\LCD_Driver
人机交互

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