ASCII clock

ASCII Code can be roughly divided into three parts .

The first part is :ASCII Code is not a print control character ; 
The second part is :ASCII Code print characters ; 
The third part is : Expand ASCII Code print characters .


The first part :ASCII Non print control character table

ASCII The numbers on the code table 0–31 Assigned to the control character , It's used to control peripheral devices like printers . for example ,12 On behalf of page change / New page features . This command instructs the printer to jump to the beginning of the next page .( carefully observe and study ASCII In the code table 0-31)


The second part :ASCII Print character

Numbers 32–126 Assigned to characters that can be found on the keyboard , When you view or print a document, it appears . Numbers 127 representative DELETE command .( carefully observe and study ASCII In the code table 32-127)

Bin Dec Hex abbreviation / character explain
00000000 0 00 NUL(null) Null character
00000001 1 01 SOH(start of headling) Title start
00000010 2 02 STX (start of text) Text begins
00000011 3 03 ETX (end of text) End of text
00000100 4 04 EOT (end of transmission) End of transmission
00000101 5 05 ENQ (enquiry) request
00000110 6 06 ACK (acknowledge) Receive notice
00000111 7 07 BEL (bell) Ring the bell
00001000 8 08 BS (backspace) Backspace
00001001 9 09 HT (horizontal tab) Horizontal tabs
00001010 10 0A LF (NL line feed, new line) Line feed key
00001011 11 0B VT (vertical tab) Vertical tabs
00001100 12 0C FF (NP form feed, new page) Page feed key
00001101 13 0D CR (carriage return) Enter key
00001110 14 0E SO (shift out) No switching
00001111 15 0F SI (shift in) Enable Toggle
00010000 16 10 DLE (data link escape) Data link escape
00010001 17 11 DC1 (device control 1) Equipment control 1
00010010 18 12 DC2 (device control 2) Equipment control 2
00010011 19 13 DC3 (device control 3) Equipment control 3
00010100 20 14 DC4 (device control 4) Equipment control 4
00010101 21 15 NAK (negative acknowledge) Refuse to accept
00010110 22 16 SYN (synchronous idle) Sync idle
00010111 23 17 ETB (end of trans. block) End of transfer block
00011000 24 18 CAN (cancel) Cancel
00011001 25 19 EM (end of medium) Media break
00011010 26 1A SUB (substitute) As a substitute
00011011 27 1B ESC (escape) overflow
00011100 28 1C FS (file separator) File separator
00011101 29 1D GS (group separator) Grouping
00011110 30 1E RS (record separator) Record separator
00011111 31 1F US (unit separator) Cell separator
00100000 32 20 (space) Space
00100001 33 21 !  
00100010 34 22 "  
00100011 35 23 #  
00100100 36 24 $  
00100101 37 25 %  
00100110 38 26 &  
00100111 39 27 '  
00101000 40 28 (  
00101001 41 29 )  
00101010 42 2A *  
00101011 43 2B +  
00101100 44 2C ,  
00101101 45 2D -  
00101110 46 2E .  
00101111 47 2F /  
00110000 48 30 0  
00110001 49 31 1  
00110010 50 32 2  
00110011 51 33 3  
00110100 52 34 4  
00110101 53 35 5  
00110110 54 36 6  
00110111 55 37 7  
00111000 56 38 8  
00111001 57 39 9  
00111010 58 3A :  
00111011 59 3B ;  
00111100 60 3C << td="">  
00111101 61 3D =  
00111110 62 3E >  
00111111 63 3F ?  
01000000 64 40 @  
01000001 65 41 A  
01000010 66 42 B  
01000011 67 43 C  
01000100 68 44 D  
01000101 69 45 E  
01000110 70 46 F  
01000111 71 47 G  
01001000 72 48 H  
01001001 73 49 I  
01001010 74 4A J  
01001011 75 4B K  
01001100 76 4C L  
01001101 77 4D M  
01001110 78 4E N  
01001111 79 4F O  
01010000 80 50 P  
01010001 81 51 Q  
01010010 82 52 R  
01010011 83 53 S  
01010100 84 54 T  
01010101 85 55 U  
01010110 86 56 V  
01010111 87 57 W  
01011000 88 58 X  
01011001 89 59 Y  
01011010 90 5A Z  
01011011 91 5B [  
01011100 92 5C \  
01011101 93 5D ]  
01011110 94 5E ^  
01011111 95 5F _  
01100000 96 60 `  
01100001 97 61 a  
01100010 98 62 b  
01100011 99 63 c  
01100100 100 64 d  
01100101 101 65 e  
01100110 102 66 f  
01100111 103 67 g  
01101000 104 68 h  
01101001 105 69 i  
01101010 106 6A j  
01101011 107 6B k  
01101100 108 6C l  
01101101 109 6D m  
01101110 110 6E n  
01101111 111 6F o  
01110000 112 70 p  
01110001 113 71 q  
01110010 114 72 r  
01110011 115 73 s  
01110100 116 74 t  
01110101 117 75 u  
01110110 118 76 v  
01110111 119 77 w  
01111000 120 78 x  
01111001 121 79 y  
01111010 122 7A z  
01111011 123 7B {  
01111100 124 7C |  
01111101 125 7D }  
01111110 126 7E ~  
01111111 127 7F DEL (delete) Delete

The third part : Expand ASCII Code print characters

Extended ASCII Characters satisfy the need for more characters . Extended ASCII contain ASCII Existing 128 Characters ( Numbers 0–32 It's shown in the figure below ), added 128 Characters , The total is 256 individual . Even with these more characters , Many languages still contain content that cannot be compressed to 256 A symbol in a character . therefore , There are some ASCII Code variants to include regional characters and symbols . for example , Many software programs put ASCII clock ( Also known as ISO8859-1) For North America 、 Western Europe 、 Australian and African languages .

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