keyboard controller chip C language control procedures, the adoption of the 7219 procedures can be achieved most of LED chip control functions of the display, keyboard and read, I2C Functions can also be used for other I2C devices

7290
7290.hex
7290.M51
7290.Opt
7290.plg
7290.Uv2
7290test.c
7290test.LST
7290test.OBJ
Startup.LST
VIIC_C51.c
VIIC_C51.h
VIIC_C51.LST
VIIC_C51.OBJ
ZLG7290.C
zlg7290.h
Zlg7290.LST
Zlg7290.OBJ

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