Extended ASCII Codes
128
129
130
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132
133
134
135
136
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141
142
143
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145
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148
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170
171
172
173
174
175
176
177
178
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181
182
183
184
185
186
187
188
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190
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201
202
203
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205
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209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
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239
240
241
242
243
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245
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254
255
fine
Extended ASCII Codes As people gradually required computers to understand additional characters and non-printing characters the ASCII set became restrictive. As with most technology, it took a while to get a single standard for these extra characters and hence there are few varying 'extended' sets. The most popular is presented below.
IBM Scan Codes The following table is nothing to do with ASCII, but has been requested by a number of you out there. When a key on your keyboard is pressed, a code is sent which can be recognised by software. Programmers will find the most use for this table to map keys to actions for the function keys etc.
EBCDIC Codes ASCII is not the only format in use out there. IBM adopted EBCDIC (Extended Binary Coded Decimal Interchange Code) developed for punched cards in the early 1960s and still uses it on mainframes today. It is probably the next most well known character set due to the proliferation of IBM mainframes. It comes in at least six slightly differing forms, so again here is the most common.
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