键盘按键的各种编码对照表

本附录中的各表列举了键盘按键扫描码和其ASCII码之间的对照关系，表中数据都是十六进制形式。

在用中断16H的0号功能时，当按下任意一个键或组合键时，寄存器AH和AL分别保存着该按键的扫描码和ASCII码。

表1、ASCII码的编码方案

高位 \| 低位	000	001	010	011	100	101	110	111
0000	NUL	DEL	SP	0	@	P	`	p
0001	SOH	DC1	!	1	A	Q	a	q
0010	STX	DC2	“	2	B	R	b	r
0011	ETX	DC3	#	3	C	S	c	s
0100	EOT	DC4	$	4	D	T	d	t
0101	ENQ	NAK	%	5	E	U	e	u
0110	ACK	SYN	&	6	F	V	f	v
0111	BEL	ETB	‘	7	G	W	g	w
1000	BS	CAN	(	8	H	X	h	x
1001	HT	EM	)	9	I	Y	i	y
1010	LF	SUB	*	:	J	Z	j	z
1011	VT	ESC	'+	;	K	[	k	{
1100	FF	FS		<	L	/	l	\|
1101	CR	GS	-	=	M	]	m	}
1110	SO	RS	.	>	N	^	n	~
1111	SI	US	/	?	O	_	o	Del

按　键	单　键		SHIFT		CTRL		ALT
按　键	扫描码	ASCII码	扫描码	ASCII码	扫描码	ASCII码	扫描码	ASCII码
a and A	1E	61	1E	41	1E	01	1E	00
b and B	30	62	30	42	30	02	30	00
c and C	2E	63	2E	43	2E	03	2E	00
d and D	20	64	20	44	20	04	20	00
e and E	12	65	12	45	12	05	12	00
f and F	21	66	21	46	21	06	21	00
g and G	22	67	22	47	22	07	22	00
h and H	23	68	23	48	23	08	23	00
i and I	17	69	17	49	17	09	17	00
j an1 J	24	6A	24	4A	24	0A	24	00
k and K	25	6B	25	4B	25	0B	25	00
l and L	26	6C	26	4C	26	0C	26	00
m and M	32	6D	32	4D	32	0D	32	00
n and N	31	6E	31	4E	31	0E	31	00
o and O	18	6F	18	4F	18	0F	18	00
p and P	19	70	19	50	19	10	19	00
q and Q	10	71	10	51	10	11	10	00
r and R	13	72	13	52	13	12	13	00
s and S	1F	73	1F	53	1F	13	1F	00
t and T	14	74	14	54	14	14	14	00
u and U	16	75	16	55	16	15	16	00
v and V	2F	76	2F	56	2F	16	2F	00
w and W	11	77	11	57	11	17	11	00
x and X	2D	78	2D	58	2D	18	2D	00
y and Y	15	79	15	59	15	19	15	00
z and Z	2C	7A	2C	5A	2C	1A	2C	00
SpaceBar	39	20	39	20	39	20	39	20

按　键	单　键		SHIFT		CTRL		ALT
按　键	扫描码	ASCII码	扫描码	ASCII码	扫描码	ASCII码	扫描码	ASCII码
F1	3B	00	54	00	5E	00	68	00
F2	3C	00	55	00	5F	00	69	00
F3	3D	00	56	00	60	00	6A	00
F4	3E	00	57	00	61	00	6B	00
F5	3F	00	58	00	62	00	6C	00
F6	40	00	59	00	63	00	6D	00
F7	41	00	5A	00	64	00	6E	00
F8	42	00	5B	00	65	00	6F	00
F9	43	00	5C	00	66	00	70	00
F10	44	00	5D	00	67	00	71	00
F11	85	00	87	00	89	00	8B	00
F12	86	00	88	00	8A	00	8C	00

按　键	单　键		SHIFT		CTRL		ALT
按　键	扫描码	ASCII码	扫描码	ASCII码	扫描码	ASCII码	扫描码	ASCII码
Ins & 0	52	00	52	30	92	00
End & 1	4F	00	4F	31	75	00	00	01
↓ & 2	50	00	50	32	91	00	00	02
PgDn & 3	51	00	51	33	76	00	00	03
← & 4	4B	00	4B	34	73	00	00	04
5	4C	00	4C	35	8F	00	00	05
→ & 6	4D	00	4D	36	74	00	00	06
Home & 7	47	00	47	37	77	00	00	07
↑ & 8	48	00	48	38	8D	00	00	08
PgUp & 9	49	00	49	39	84	00	00	09
+	4E	2B	4E	2B	90	00	4E	00
-	4A	2D	4A	2D	8E	00	4A	00
Del & ‘.’	53	00	53	2E	93	00
*	37	2A	37	2A	96	00	37	00

键	单　键		SHIFT		CTRL		ALT
按　键	扫描码	ASCII码	扫描码	ASCII码	扫描码	ASCII码	扫描码	ASCII码
` and ~	29	60	29	7E			29	00
1 and !	02	31	02	21			78	00
2 and @	03	32	03	40	03	00	79	00
3 and #	04	33	04	23			7A	00
4 and $	05	34	05	24			7B	00
5 and %	06	35	06	25			7C	00
6 and ^	07	36	07	5E	07	1E	7D	00
7 and &	08	37	08	26			7E	00
8 and *	09	38	09	2A			7F	00
9 and (	0A	39	0A	38			80	00
0 and )	0B	30	0B	29			81	00
- and _	0C	2D	0C	5F	0C	1F	82	00
= and +	0D	3D	0D	2B			83	00

按　键	单　键		SHIFT		CTRL		ALT
按　键	扫描码	ASCII码	扫描码	ASCII码	扫描码	ASCII码	扫描码	ASCII码
Esc	01	1B	01	1B	01	1B	01	00
Backspace	0E	08	0E	08	0E	7F	0E	00
Tab	0F	09	0F	00	94	00	A5	00
Enter	1C	0D	1C	0D	1C	0A	1C

按　键	单　键		SHIFT		CTRL		ALT
按　键	扫描码	ASCII码	扫描码	ASCII码	扫描码	ASCII码	扫描码	ASCII码
[ and {	1A	5B	1A	7B	1A	1B	1A	00
] and }	1B	5D	1B	7D	1B	1D	1B	00
; and :	27	3B	27	3A			27
’ and "	28	27	28	22			28
/ and \|	2b	5C	2b	7C	2B	1C	2b
, and <	33	2C	33	3C			33
. and >	34	2E	34	3E			34
/ and ?	35	2F	35	3F			35

按　键	单　键		SHIFT		CTRL		ALT
按　键	扫描码	ASCII码	扫描码	ASCII码	扫描码	ASCII码	扫描码	ASCII码
Slash(/)	E0	2F	E0	2F	95	0	A4	00
Enter	E0	0D	E0	0D	E0	0A	A6	00
Home	47	E0	47	E0	77	E0	97	00
End	4F	E0	4F	E0	75	E0	9F	00
PageUp	49	E0	49	E0	84	E0	99	00
PageDown	51	E0	51	E0	76	E0	A1	00
DnArrow	50	E0	50	E0	91	E0	A0	00
LeftArrow	4B	E0	4B	E0	73	E0	9B	00
RightArrow	4D	E0	4D	E0	74	E0	9D	00
UpArrow	48	E0	48	E0	8D	E0	98	00
Ins	52	E0	52	E0	92	E0	A2	00
Del	53	E0	53	E0	93	E0	A3

当这些键被按下时，BIOS并没有把它们的扫描码输入键盘缓冲区。