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Wrox - ASP.NET Beginner's Guide (VBL)_AppE

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Wrox - ASP.NET Beginner's Guide (VBL)_AppE

    The ASCII Character Set The American Standard Code for Information Interchange or ASCII assigns

    values between 0 and 255 for upper and lower case letters, numeric digits, punctuation marks and

    other symbols. ASCII characters can be split into the following sections:

; 0 Ŕ 31 Control codes

    ; 32 Ŕ 127 Standard, implementation-independent characters

    ; 128 Ŕ 255 Special symbols, international character sets Ŕ generally,

     non-standard characters.

    Control Codes : ASCII Characters 0 - 31 The following table lists and describes the first 32 ASCII characters, often referred to as control codes.

    The columns show the decimal and hexadecimal ASCII values for each code along with their abbreviated and

    full names. Descriptions are given to those most in use today.

Decimal Hexadecimal Code Description

    000 00 NUL Null

    001 01 SOH Start Of Heading

    002 02 STX Start of TeXt

    003 03 ETX End of TeXt

    004 04 EOT End Of Transmission

    005 05 ENQ ENQuiry

    006 06 ACK ACKnowledge

    Table continued on following page

    Appendix E

Decimal Hexadecimal Code Description

    007 07 BEL BELl. Caused teletype machines to ring a bell. Causes a

    beep in many common terminals and terminal emulation

    programs.

    008 08 BS BackSpace. Moves the cursor move backwards (left) one

    space.

    009 09 HT Horizontal Tab. Moves the cursor right to the next tab stop.

    The spacing of tab stops is dependent on the output device,

    but is often either 8 or 10 characters wide.

    010 0A LF Line Feed. Moves the cursor to a new line. On Unix

    systems, moves to a new line AND all the way to the left.

    011 0B VT Vertical Tab

    012 0C FF Form Feed. Advances paper to the top of the next page (if

    the output device is a printer).

    013 0D CR Carriage Return. Moves the cursor all the way to the left,

    but does not advance to the next line.

    014 0E SO Shift Out

    015 0F SI Shift In

    016 10 DLE Data Link Escape

    017 11 DC1 Device Control 1

    018 12 DC2 Device Control 2

    019 13 DC3 Device Control 3

    020 14 DC4 Device Control 4

    021 15 NAK Negative AcKnowledge

    022 16 SYN SYNchronous idle

    023 17 ETB End of Transmission Block

    024 18 CAN CANcel

    025 19 EM End of Medium

    026 1A SUB SUBstitute

    027 1B ESC ESCape

    028 1C FS File Separator

    029 1D GS Group Separator

    030 1E RS Record Separator

    031 1F US Unit Separator

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    The ASCII Character Set

    The Standard ASCII Characters : 32 - 127 ASCII Characters 32 - 127 are the standard, implementation-independent alphanumeric characters we work

    with every day. The tables below show the characters along with both their decimal and hexadecimal ASCII

    values.

    Characters 32 - 64

    The first table, which contains characters 32 - 64, contains the majority of the standard symbolic characters

    and the numbers from zero to nine.

Decimal Hexadecimal Character Decimal Hexadecimal Character

    032 20 Space 049 31 1

    033 21 ! 050 32 2

    034 22 " 051 33 3

    035 23 # 052 34 4

    036 24 $ 053 35 5

    037 25 % 054 36 6

    038 26 & 055 37 7

    039 27 ' 056 38 8

    040 28 ( 057 39 9

    041 29 ) 058 3A :

    042 2A * 059 3B ;

    043 2B + 060 3C <

    044 2C , 061 3D =

    045 2D - 062 3E >

    046 2E . 063 3F ?

    047 2F / 064 40 @

    048 30 0

    Characters 65 - 127

    The second table, which contains characters 65 - 127, contains the standard Latin alphabet characters both

    lower and upper case, separated only by a few characters at 91 - 96 and 123 - 127.

    747

    Appendix E

    Decimal Hexadecimal Character Decimal Hexadecimal Character 065 41 A 097 61 a 066 42 B 098 62 b 067 43 C 099 63 c 068 44 D 100 64 d 069 45 E 101 65 e 070 46 F 102 66 f 071 47 G 103 67 g 072 48 H 104 68 h 073 49 I 105 69 i 074 4A J 106 6A j 075 4B K 107 6B k 076 4C L 108 6C l 077 4D M 109 6D m 078 4E N 110 6E n 079 4F O 111 6F o 080 50 P 112 70 p 081 51 Q 113 71 q 082 52 R 114 72 r 083 53 S 115 73 s 084 54 T 116 74 t 085 55 U 117 75 u 086 56 V 118 76 v 087 57 W 119 77 w 088 58 X 120 78 x 089 59 Y 121 79 y 090 5A Z 122 7A z 091 5B [ 123 7B {

    748

    The ASCII Character Set

    Decimal Hexadecimal Character Decimal Hexadecimal Character 092 5C \ 124 7C |

    093 5D ] 125 7D }

    094 5E ^ 126 7E ~

    095 5F _ 127 7F delete 096 60 '

    The Non-Standard ASCII Characters : 128 - 255

    The second half of the ASCII table holds the non-standard extension set of characters which may vary

    depending which computer system you may be using. One common Ŕ but in no way definitive Ŕ example of this extended set is as follows.

    Characters 128 - 191

    This first table contains characters 128 - 191, abstract symbols that appear in text from time to time.

    Decimal Hexadecimal Character Decimal Hexadecimal Character 128 80 ? 160 A0 non-breaking

    space

    129 81 161 A1 ?

    130 82 162 A2 ?

    131 83 ƒ 163 A3 ?

    132 84 164 A4 ?

    133 85 165 A5 ?

    134 86 166 A6 ?

    135 87 167 A7 ?

    136 88 ˆ 168 A8 ?

    137 89 169 A9 ?

    138 8A Š 170 AA ª

    139 8B 171 AB ?

    140 8C Œ 172 AC ?

    141 8D ? 173 AD ?

    142 8E Ţ 174 AE ?

    Table continued on following page

    749

    Appendix E

    Decimal Hexadecimal Character Decimal Hexadecimal Character 143 8F ? 175 AF ? 144 90 ? 176 B0 ? 145 91 ' 177 B1 ? 146 92 ' 178 B2 ? 147 93 " 179 B3 ? 148 94 180 B4 ? 149 95 181 B5 µ 150 96 Ŕ 182 B6 ? 151 97 ŕ 183 B27 ? 152 98 ? 184 B8 ? 153 99 ? 185 B9 ? 154 9A š 186 BA º 155 9B 187 BB ? 156 9C œ 188 BC ? 157 9D ? 189 BD ? 158 9E Ÿ 190 BE ? 159 9F Ÿ 191 BF ?

    Characters 192 - 255

    The second table contains characters 192 - 255, variously accented alphabetical characters.

    Decimal Hexadecimal Character Decimal Hexadecimal Character 192 C0 À 224 E0 à 193 C1 Á 225 E1 á 194 C2 Â 226 E2 â 195 C3 Ã 227 E3 ã 196 C4 Ä 228 E4 ä 197 C5 Å 229 E5 å 198 C6 Æ 230 E6 æ

    750

    The ASCII Character Set

    Decimal Hexadecimal Character Decimal Hexadecimal Character 199 C7 Ç 231 E7 ç 200 C8 È 232 E8 è 201 C9 É 233 E9 é 202 CA Ê 234 EA ê 203 CB Ë 235 EB ë 204 CC Ì 236 EC ì 205 CD Í 237 ED í 206 CE Î 238 EE î 207 CF Ï 239 EF ï 208 D0 Ð 240 F0 ð 209 D1 Ñ 241 F1 ñ 210 D2 Ò 242 F2 ò 211 D3 Ó 243 F3 ó 212 D4 Ô 244 F4 ô 213 D5 Ö 245 F5 õ 214 D6 Ö 246 F6 ö 215 D7 × 247 F7 ? 216 D8 Ø 248 F8 ø 217 D9 Ù 249 F9 ù 218 DA Ú 250 FA ú 219 DB Û 251 FB û 220 DC Ü 252 FC ü 221 DD Ý 253 FD ý 222 DE Þ 254 FE þ 223 DF ß 255 FF

    751

Appendix E

752

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