As boring as an ASCII chart maybe.. sometimes you just need a look up table to reference if needed.

http://www.startupinternetmarketing.com/resources/ascii.html

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ASCII Chart
This chart contains the code for all printable ASCII characters. Simply copy the code for the character that you want to display, and paste it into your document.

General font = any standard font face
Symbol font = the symbol font available in Windows

Character
General font Character
Symbol font # code Alternate
HTML Description
 Unused
 Unused
Carriage Return
 Unused
 Unused
Space Space
! ! ! Exclamation point
" " " " Double Quotes
# # # Number symbol
$ $ $ Dollar symbol
% % % Percent symbol
& & & & Ampersand
' ' ' Single quote
( ( ( Open parenthesis
) ) ) Close parenthesis
* * * Asterisk
+ + + Plus sign
, , , Comma
- - - Hyphen
. . . Period
/ / / Slash (bar)
0 0 0 Zero
1 1 1 One
2 2 2 Two
3 3 3 Three
4 4 4 Four
5 5 5 Five
6 6 6 Six
7 7 7 Seven
8 8 8 Eight
9 9 9 Nine
: : : Colon
; ; ; Semicolon
< > > > Greater than
? ? ? Question mark
@ @ @ At symbol

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Plus many more at: http://www.startupinternetmarketing.com/resources/ascii.html