3 h C Digital Code Prof Seewhy Lee
- Slides: 41
3. h C Digital Code Prof. Seewhy Lee Presents
§ 8비트 데이터의 에러 정정 코드 § For Example P 1 P 2 D 3 0 P 4 D 5 D 6 D 7 0 1 0 P 8 D 9 1 D 10 D 11 1 1 D 12 0
1. ASCII(American Standard Code for Information Interchange) § 미국 국립 표준 연구소(ANSI)가 제정한 정보 교환용 미국 표준 코드 § 128가지의 문자를 표현 가능 § ASCII 코드의 구성 zone bit parity 7 C digit bit 6 5 4 3 2 1 0 0 영문자 A~O(0001~1111) 1 0 1 영문자 P~Z(0000~1010) 0 1 1 숫자 0~9(0000~1001)
§ 표준 ASCII 코드표 0 1 2 3 4 5 6 7 8 9 A B C D E F BS TAB LF 0 NUL SOH STX EOT ENQ ACK BEL VT FF CR SO SI 1 DLE DC 1 DC 2 DC 3 DC 4 NAK SYN ETB CAN EM SUB ESC FS GS RS US , - . / = > ? 2 ! " # $ % & ' ( ) * + 3 0 1 2 3 4 5 6 7 8 9 : ; 4 @ A B C D E F G H I J K L M N O 5 P Q R S T U V W X Y Z [ ] ^ _ 6 ` a b c d e f g h i j k ㅣ m n o 7 p q r s t u v w x y z { | } ~ DEL
§ 표준 BCD 코드표 문자 C ZZ 8421 문자 C ZZ 8421 A B C D E F G H I 0 110001 0 110010 1 110011 0 110100 1 110101 1 110110 0 110111 0 111000 1 111001 J K L M N O P Q R 1 100001 1 100010 0 100011 1 100100 0 100101 0 100110 1 100111 1 101000 0 101001 S T U V W X Y Z 1 010010 0 010011 1 010100 0 010101 0 010110 1 010111 1 011000 0 011001 1 2 3 4 5 6 7 8 9 0 0 000001 0 000010 1 000011 0 000100 1 000101 1 000110 0 000111 0 001000 1 001001 1 001010 = > + , ) % ? @ $ 0 001011 1 001100 0 010000 1 011011 0 011100 1 011101 0 011111 1 100001 1 111010 1 111111
§ EBCDIC 코드표 16진 0 1 2 3 4 5 6 7 8 9 A B C D E F 2진 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 0000 NUL SOH STX ETX HT DEL VT FF CR SO SI 0001 DLE BS CAN EM IFS IGS IRS IUS 0010 LF ETB ESC ENQ ACK BEL 0011 SYN EOT NAK SUB 0100 space [. ( + | 0101 & ! $ * ) ^ 0110 / | , % _ > ? 0111 ` : # @ ‘ = " 1000 a b c d e f g h i 1001 j k l m n o p q r 1010 ~ s t u v w x y z 1011 1100 { A B C D E F G H I 1101 } J K L M N O P Q R 1110 S T U V W X Y Z 1111 0 1 2 3 4 5 6 7 8 9
Thanks for your attention~!! Prof. Seewhy Lee
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- Weighted and non weighted binary codes
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