ASCII Alphanumeric Code

The American Standard Code for Information Interchange (ASCII) is the standard alphanumeric code for keyboards and a host of other data interchange tasks. Letters, numbers, and single keystroke commands are represented by a seven-bit word. Typically a strobe bit or start bit is sent first, followed by the code with LSB first. Being a 7-bit code, it has 2^7 or 128 possible code groups.

Code Table

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ASCII Alphanumeric Code

Char	7 bit ASCII	HEX	Char	7 bit ASCII	HEX	Char	7 bit ASCII	HEX
A	100 0001	41	a	110 0001	61	0	011 0000	30
B	100 0010	42	b	110 0010	62	1	011 0001	31
C	100 0011	43	c	110 0011	63	2	011 0010	32
D	100 0100	44	d	110 0100	64	3	011 0011	33
E	100 0101	45	e	110 0101	65	4	011 0100	34
F	100 0110	46	f	110 0110	66	5	011 0101	35
G	100 0111	47	g	110 0111	67	6	011 0110	36
H	100 1000	48	h	110 1000	68	7	011 0111	37
I	100 1001	49	i	110 1001	69	8	011 1000	38
J	100 1010	4A	j	110 1010	6A	9	011 1001	39
K	100 1011	4B	k	110 1011	6B	blank	010 0000	20
L	100 1100	4C	l	110 1100	6C	.	010 1110	2E
M	100 1101	4D	m	110 1101	6D	(	010 1000	28
N	100 1110	4E	n	110 1110	6E	+	010 1011	2B
O	100 1111	4F	o	110 1111	6F	$	010 0100	24
P	101 0000	50	p	111 0000	70	*	010 1010	2A
Q	101 0001	51	q	111 0001	71	)	010 1001	29
R	101 0010	52	r	111 0010	72	-	010 1101	2D
S	101 0011	53	s	111 0011	73	/	010 1111	2F
T	101 0100	54	t	111 0100	74	,	010 1100	2C
U	101 0101	55	u	111 0101	75	=	011 1101	3D
V	101 0110	56	v	111 0110	76	RETURN	000 1101	0D
W	101 0111	57	w	111 0111	77	LNFEED	000 1010	0A
X	101 1000	58	x	111 1000	78	0	011 0000	30
Y	101 1001	59	y	111 1001	79	0	011 0000	30
Z	101 1010	5A	z	111 1010	7A	0	011 0000	30

Discussion of ASCII Code

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