Character Set

ASCII Code	Character	Description
0	NUL	Null
1	SOH	Start of heading
2	STX	Start of text
3	ETX	End of text
4	EOT	End of transmission
5	ENQ	Inquiry
6	ACK	Acknowledgment
7	BEL	Bell
8	BS	Backspace
9	HT	Horizontal tab
10	LF	Line feed
11	VT	Vertical tab
12	FF	Form feed
13	CR	Carriage return
14	SO	Shift out
15	SI	Shift in
16	DLE	Data link escape
17	DC1	Device control 1
18	DC2	Device control 2
19	DC3	Device control 3
20	DC4	Device control 4
21	NAK	Negative acknowledgment
22	SYN	Synchronous idle
23	ETB	End of transmission block
24	CAN	Cancel
25	EM	End of medium
26	SUB	Substitute
27	ESC	Escape
28	FS	File separator
29	GS	Group separator
30	RS	Record separator
31	US	Unit separator
32	SP	Space or blank
33	!	Exclamation mark
34	“	Quotation mark
35	#	Number sign
36	$	Dollar sign
37	%	Percent sign
38	&	Ampersand
39	'	Apostrophe
40	(	Left Parenthesis
41	)	Right Parenthesis
42	*	Asterisk
43	+	Plus sign
44	,	Comma
45	-	Minus sign or hyphen
46	.	Period or decimal point
47	/	Slash
48	0	Zero
49	1	One
50	2	Two
51	3	Three
52	4	Four
53	5	Five
54	6	Six
55	7	Seven
56	8	Eight
57	9	Nine
58	:	Colon
59	;	Semicolon
60	<	Left angle bracket
61	=	Equal sign
62	>	Right angle bracket
63	?	Question mark
64	@	At sign
65	A	Upper case A
66	B	Upper case B
67	C	Upper case C
68	D	Upper case D
69	E	Upper case E
70	F	Upper case F
71	G	Upper case G
72	H	Upper case H
73	I	Upper case I
74	J	Upper case J
75	K	Upper case K
76	L	Upper case L
77	M	Upper case M
78	N	Upper case N
79	O	Upper case O
80	P	Upper case P
81	Q	Upper case Q
82	R	Upper case R
83	S	Upper case S
84	T	Upper case T
85	U	Upper case U
86	V	Upper case V
87	W	Upper case W
88	X	Upper case X
89	Y	Upper case Y
90	Z	Upper case Z
91	[	Left square bracket
92	\	Back slash
93	]	Right square bracket
94	^	Circumflex
95	_	Underscore
96	`	Grave accent
97	a	Lower case a
98	b	Lower case b
99	c	Lower case c
100	d	Lower case d
101	e	Lower case e
102	f	Lower case f
103	g	Lower case g
104	h	Lower case h
105	i	Lower case i
106	j	Lower case j
107	k	Lower case k
108	l	Lower case l
109	m	Lower case m
110	n	Lower case n
111	o	Lower case o
112	p	Lower case p
113	q	Lower case q
114	r	Lower case r
115	s	Lower case s
116	t	Lower case t
117	u	Lower case u
118	v	Lower case v
119	w	Lower case w
120	x	Lower case x
121	y	Lower case y
122	z	Lower case z
123	{	Left brace
124	|	Vertical line
125	}	Right brace
126	~	Tilde
127	DEL	Delete

Note that the extended character set (values 128-255) may be used. However, since the characters of the extended set vary across locales, they are not presented here. The extended_chars symbol must be set in the definitions file for full support of specific extended characters.

Extended ASCII characters will be output to DNC files, but they will not be output to punched tape files. For punched tape, the eighth bit is reserved for parity checking. Therefore, any values greater than 127 will have their last bit truncated. For example, a value of 128 will be treated as a 0 (zero), a value of 255 will be treated as 127.