C语言实现单片机的键盘程序

c语言实现单片机的键盘程序#include"SST89x5x4.H"#include#defineucharunsignedchar#defineuintunsignedint#define_Nop()_nop_()unsignedcharcodeKey_Value_Table[16]={0xff,0x00,0x01,0xff,0x02,0xff,0xff,0xff,0x03,0xff,0xff,0xff,0xff,0xff,0xff,0xff};voidKey_Init(void);unsignedcharGetScanKey(void);unsi