ASCII 34 · 0x22

" — Quotation mark

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Not ASCII. Bytes 0x80–0xFF meant different things on different systems; “extended ASCII” was never one standard. Pick the set your data came from.

Windows-1252 ISO-8859-1 Code page 437

0_ 0001_ 0012_ 0103_ 0114_ 1005_ 1016_ 1107_ 111

_0 000000 NUL 10 DLE 20 SP 30 0 40 @ 50 P 60 ` 70 p

_1 000101 SOH 11 DC1 21 ! 31 1 41 A 51 Q 61 a 71 q

_2 001002 STX 12 DC2 22 " 32 2 42 B 52 R 62 b 72 r

_3 001103 ETX 13 DC3 23 # 33 3 43 C 53 S 63 c 73 s

_4 010004 EOT 14 DC4 24 $ 34 4 44 D 54 T 64 d 74 t

_5 010105 ENQ 15 NAK 25 % 35 5 45 E 55 U 65 e 75 u

_6 011006 ACK 16 SYN 26 & 36 6 46 F 56 V 66 f 76 v

_7 011107 BEL 17 ETB 27 ' 37 7 47 G 57 W 67 g 77 w

_8 100008 BS 18 CAN 28 ( 38 8 48 H 58 X 68 h 78 x

_9 100109 HT 19 EM 29 ) 39 9 49 I 59 Y 69 i 79 y

_A 10100A LF 1A SUB 2A * 3A : 4A J 5A Z 6A j 7A z

_B 10110B VT 1B ESC 2B + 3B ; 4B K 5B [ 6B k 7B {

_C 11000C FF 1C FS 2C , 3C < 4C L 5C \ 6C l 7C |

_D 11010D CR 1D GS 2D - 3D = 4D M 5D ] 6D m 7D }

_E 11100E SO 1E RS 2E . 3E > 4E N 5E ^ 6E n 7E ~

_F 11110F SI 1F US 2F / 3F ? 4F O 5F _ 6F o 7F DEL

Table 1 The 1967 layout: columns are the top three bits, rows the bottom four.

From the history

A short history of ASCII

From telegraph codes to the seven bits every computer still speaks.Characters

Why DEL is 127

Paper tape had no undo, so ASCII’s erase code is the one with every hole punched.Line endings

CR, LF and the CRLF wars

Why one line break became two codes, and why systems still disagree about it.