鍗曠墖鏈洪┍鍔?/p>
4X4
鐭╅樀寮忛敭鐩樿緭鍏ョ▼搴?/p>
鐢?/p>
AT89S51
鍗曠墖鏈虹殑骞惰鍙?/p>
P1
鎺?/p>
4脳
4
鐭╅樀閿洏锛屼互
P1.0
锛?/p>
P1.3
浣滆緭鍏ョ嚎锛屼互
P1.4
锛?/p>
P1.7
浣滆緭鍑虹嚎锛涘湪鏁?/p>
鐮佺涓婃樉绀烘瘡涓寜閿殑
鈥?/p>
0
锛?/p>
F
鈥?/p>
搴忓彿銆?/p>
瀹炵幇閿洏杈撳叆鐨勮瘑鍒�?/p>
鎴戝皢缁欏ぇ瀹舵彁渚?/p>
c
鍜屾眹缂栦袱涓増鏈殑
4X4
鐭╅樀寮忛敭鐩樿緭鍏ョ▼搴忋�傚鏋滅綉椤典笂涓嶆竻妤氱偣姝ゅ涓嬭浇鏈敭鐩樿緭鍏?/p>
绋嬪簭婧愪唬鐮?/p>
姹囩紪璇█婧愮▼搴忥細
KEYBUF
EQU
30H
ORG
00H
START:
MOV
KEYBUF,#2
WAIT:
MOV
P3,#0FFH
CLR
P3.4
MOV
A,P3
ANL
A,#0FH
XRL
A,#0FH
JZ
NOKEY1
LCALL
DELY10MS
MOV
A,P3
ANL
A,#0FH
XRL
A,#0FH
JZ
NOKEY1
MOV
A,P3
ANL
A,#0FH
CJNE
A,#0EH,NK1
MOV
KEYBUF,#0
LJMP
DK1