686
Appendix D
ASCII Subset of Unicode
The following chart shows the ordering of characters in the ASCII (American Standard Code
for Information Interchange) subset of Unicode. The internal representation for each char-
acter is shown in decimal. For example, the letter Ais represented internally as the integer- The space (blank) character is denoted by a “”.
Right ASCII
Left Digit
Digit(s) 0 1 2 3 4 5 6 7 8 90 NUL SOH STX ETX EOT ENQ ACK BEL BS HT
1 LF VT FF CR SO SI DLE DC1 DC2 DC3
2 DC4 NAK SYN ETB CAN EM SUB ESC FS GS
3RSUS !“ #$%& ́
4()*+,–./01
5 23 456 789: ;
6<=>?@ABCDE
7FGHIJKLMNO
8PQRSTUVWXY
9Z[\]^_`abc
10 defghijklm
11 n o p q r s t u v w
12 x y z { | } ~ DELCodes 00–31 and 127 are the following nonprintable control characters:
NUL Null character VT Vertical tab SYN Synchronous idle
SOH Start of header FF Form feed ETB End of transmitted block
STX Start of text CR Carriage return CAN Cancel
ETX End of text SO Shift out EM End of medium
EOT End of transmission SI Shift in SUB Substitute
ENQ Enquiry DLE Data link escape ESC Escape
ACK Acknowledge DC1 Device control one FS File separator
BEL Bell character (beep) DC2 Device control two GS Group separator
BS Back space DC3 Device control three RS Record separator
HT Horizontal tab DC4 Device control four US Unit separator
LF Line feed NAK Negative acknowledge DEL Delete