Dale - Computer Science Illuminated 91

Dale - Computer Science Illuminated 91 - 64 Chapter 3 Data...

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64 Chapter 3 Data Representation Right ASCII Left Digit Digit(s) 0123456789 0 NUL SOH STX ETX EOT ENQ ACK BEL BS HT 1 LF VT FF CR SO SI DLE DC1 DC2 DC3 2 DC4 NAK SYN ETB CAN EM SUB ESC FS GS 3R S U S ! # $ % & ´ 4( ) * + , . / 0 1 5 23456789: ; 6 <=>[email protected] 7F G H I J K L M N O 8P Q R S T U V W X Y 9Z [ \ ] ^ _ ` a b c 10 d e f g h i j k l m 11 n opqr s tuvw 12 x y z {|}~ D E L Figure 3.5 The ASCII character set The ASCII Character Set ASCII stands for American Standard Code for Information Interchange. The ASCII character set originally used seven bits to represent each char- acter, allowing for 128 unique characters. The eighth bit in each character byte was originally used as a check bit , which helped ensure proper data transmission. Later ASCII evolved so that all eight bits were used to repre- sent a character. This eight-bit version is formally called the Latin–1 Extended ASCII character set. The extended ASCII set allows for 256 char-
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