The key is one of the most commonly used input devices MCU system it is nearly as long as the need for interactive input, it must have the keyboard. This program provides the most commonly used 4*4 matrix keyboard program, and 4 key procedures.

Key\Getchar.c
...\Key.c
...\Key.ewd
...\Key.ewp
...\Key.h
...\Lcd12864.c
...\Lcd12864.h
...\main.c
...\Printf.c
...\Printf.h
Key

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