一个解决5个IO口扫描25个按键的解决方法,完整文件包,有参考意义,C51.

				XL
				H 1 areas 3 global symbols
				M PF_Config.c
				S _Device_INIT Ref0000
				S _Driver_INIT Ref0000
				A text size A flags 0
				dbfile E:\创新实践班\按键扫描\PF_Config.c
				dbfunc e System_INIT 0 fV
				dbline FFFFFFFF 0
				dbline 47 0
				dbline 48 0
				dbline 4A 2
				dbline 4B 4
				dbline 4F 6
				dbline FFFFFFFE 8
				dbline 0 8
				S _System_INIT Def0000
				T 00 00 F8 94 00 D0 00 D0 78 94 08 95
				R 00 00 00 00 82 04 00 00 82 06 01 00