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Exercise Two: Uploading an ASCII file to UHUNIX

Exercise Two: Uploading an ASCII file to UHUNIX. Part 3: ASCII. donna Bair-Mundy. What is an ASCII file?. Language of diplomacy: French. What is an ASCII file (cont'd). Multi Mate. Word Perfect. Wordstar. Microsoft Word. A 01000001 B 01000010 C 01000011 D 01000100 E 01000101

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Exercise Two: Uploading an ASCII file to UHUNIX

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  1. Exercise Two: Uploading an ASCII file to UHUNIX Part 3: ASCII donna Bair-Mundy

  2. What is an ASCII file? Language of diplomacy: French

  3. What is an ASCII file (cont'd) Multi Mate Word Perfect Wordstar Microsoft Word A 01000001 B 01000010 C 01000011 D 01000100 E 01000101 F 01000110 G 01000111 H 01001000 Standard code: American Standard Code for Information Interchange (ASCII)

  4. Data representation Bit (binary digit) - the smallest unit of data handled by a computer; consists of a single "on" or "off" digital value (0 or 1) Byte - a group of 8 bits; used to represent a single character (number, letter, punctuation mark, etc.)

  5. ASCII Standardized coding system for representing textual data Each character is stored or transmitted in one byte Originally a seven-bit code; now expanded to eight bits Allows exchange of information between applications, computers, devices Used on personal computers (EBCDIC for mainframes)

  6. Sample ASCII codes 048 0 049 1 050 2 … 065 A 066 B 067 C … 097 a 098 b 099 c … 128 Ç 129 ü 130 é 007 (beep) … 010 (line feed) … 013 (carriage return) … 032 (space) 033 ! 034 " 035 # 036 $ 037 % 038 & 039 ' 040 ( Alt + 224 = ? Alt + 234 = ?

  7. ASCII coding A = 65 0 1 0 0 0 0 0 1 (64) (1)

  8. ASCII file Also called "text" file Text plus punctuation encoded in ASCII No proprietary formatting codes ASCII files with HTML tags used in creating Web pages Proceed to Part 4

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