#ASCII ART TABLE CODE#
The American Standard Code for Information Interchange (ASCII) was developed under the auspices of a committee of the American Standards Association (ASA), called the X3 committee, by its X3.2 (later X3L2) subcommittee, and later by that subcommittee's X3.2.4 working group (now INCITS). Control pictures of equivalent controls are shown where they exist, or a grey dot otherwise. In addition, the original ASCII specification included 33 non-printing control codes which originated with Teletype machines most of these are now obsolete, although a few are still commonly used, such as the carriage return, line feed, and tab codes.įor example, lowercase i would be represented in the ASCII encoding by binary 1101001 = hexadecimal 69 ( i is the ninth letter) = decimal 105.ĪSCII (1963). Ninety-five of the encoded characters are printable: these include the digits 0 to 9, lowercase letters a to z, uppercase letters A to Z, and punctuation symbols. Originally based on the English alphabet, ASCII encodes 128 specified characters into seven-bit integers as shown by the ASCII chart above. That document was formally elevated to an Internet Standard in 2015.
The use of ASCII format for Network Interchange was described in 1969. Compared to earlier telegraph codes, the proposed Bell code and ASCII were both ordered for more convenient sorting (i.e., alphabetization) of lists and added features for devices other than teleprinters.
#ASCII ART TABLE UPDATE#
The first edition of the standard was published in 1963, underwent a major revision during 1967, and experienced its most recent update during 1986. Work on the ASCII standard began in May 1961, with the first meeting of the American Standards Association's (ASA) (now the American National Standards Institute or ANSI) X3.2 subcommittee. Its first commercial use was as a seven- bit teleprinter code promoted by Bell data services. Mark L.ASCII was developed from telegraph code. HornickĬonverting numeric to ASCII LDI r20, 0x5A init r20 to a value MOV r21, r20 copy r20 ANDI r21, 0x0F r21=0x0A after mask MOV r22, r20 copy r20 SWAP r22 r22=0xA5 after swap ANDI r22, 0x0F r22=0x05 after mask LDI r20, 0x37 ASCII offset for A-F ADD r21, r20 r21 is now 0x41=‘A’ LDI r20, 0x30 ASCII offset for 0-9 ADD r22, r20 r22 is now 0x35=‘5’ CS-280 Dr. SWAP Instruction LDI r20, 0x5A init SWAP r20 swap nibbles After SWAP, r20 contains 0xA5 CS-280 Dr. Add 0x57 to convert to ASCII code of corresponding character ‘a’ – ‘f’ CS-280 Dr.Add 0x37 to convert to ASCII code of corresponding character ‘A’ – ‘F’.Add 0x30 to convert to ASCII code of corresponding character ‘0’ – ‘9’.The ASCII code for F is 0x46 = 0xF + 0x37 CS-280 Dr.The ASCII code for E is 0x45 = 0圎 + 0x37.The ASCII code for D is 0x44 = 0xD + 0x37.The ASCII code for C is 0x43 = 0xC + 0x37.The ASCII code for B is 0x42 = 0xB + 0x37.The ASCII code for A is 0x41 = 0xA + 0x37.The ASCII code for ‘9’ is 0x39 = 0x9 + 0x30.The ASCII code for ‘8’ is 0x38 = 0x8 + 0x30.The ASCII code for ‘1’ is 0x31 = 0x1 + 0x30.The ASCII code for ‘0’ is 0x30 = 0x0 + 0x30.We need to output characters ‘0’, ‘x’, ‘5’, ‘A’.Ex: Numeric value 0x5A in binary is 01011010.The string “0x5A” is to be displayed on the LCD.
Consider the numerical value 0x5A held in a single 8-bit register.
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