AVR single-chip development deal with the keyboard procedure C source code want to Singlechip novice players a little help

key_board
.........\boat.c
.........\boat.c.bak
.........\boat.cof
.........\boat.dbg
.........\boat.dp2
.........\boat.hex
.........\boat.lis
.........\boat.lk
.........\boat.lst
.........\boat.mak
.........\boat.mp
.........\boat.o
.........\boat.prj
.........\boat.s
.........\BOAT.SRC
.........\boat._c
.........\chszsj43.chh
.........\keyboard.c
.........\keyboard.c.bak
.........\keyboard.cof
.........\keyboard.dbg
.........\keyboard.dp2
.........\keyboard.hex
.........\keyboard.lis
.........\keyboard.lk
.........\keyboard.lst
.........\keyboard.mak
.........\keyboard.mp
.........\keyboard.o
.........\keyboard.prj
.........\keyboard.s
.........\KEYBOARD.SRC
.........\keyboard._c
.........\test_scom.c
.........\test_scom.c.bak

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