Appendix A

ASCII Chart

The following chart shows the ordering of characters in ASCII (American Standard Code for Information Interchange). The internal representation for each character is shown in decimal. For example, the letter A is represented internally as the integer 65 in ASCII. The space (blank) character is denoted by a “images”.

images

Codes 00-31 and 127 are the following nonprintable control characters:

NUL Null character
SOH Start of header
STX Start of text
ETX End of text
EOT End of transmission
ENQ Enquiry
ACK Acknowledge
BEL Bell character (beep)
BS Back space
HT Horizontal tab
LF Line feed
VT Vertical tab
FF Form feed
CR Carriage return
SO Shift out
SI Shift in
DLE Data link escape
DC1 Device control one
DC2 Device control two
DC3 Device control three
DC4 Device control four
NAK Negative acknowledge
SYN Synchronous idle
ETB End of transmitted block
CAN Cancel
EM End of medium
SUB Substitute
ESC Escape
FS File separator
GS Group separator
RS Record separator
US Unit separator
DEL Delete

images

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