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Encyclopedia > Mac OS Roman

Mac OS Roman is a character encoding primarily used by Mac OS to represent text. It encodes 256 characters, the first 128 of which are identical to ASCII, with the remaining characters including mathematical symbols, diacritics, and additional punctuation marks. It is suitable for use to represent English and several other Western languages. Mac OS Roman is a superset of the original Macintosh Character Set, used in System 1. A character encoding consists of a code that pairs a set of characters (representations of graphemes or grapheme-like units, such as might appear in an alphabet or syllabary for the communication of a natural language) with a set of something else, such as numbers or electrical pulses, in order... Mac OS, which stands for Macintosh Operating System, is a range of graphical user interface-based operating systems developed by Apple Computer for their Macintosh computers. ... There are 95 printable ASCII characters, numbered 32 to 126. ... A diacritical mark or diacritic, sometimes called an accent mark, is a mark added to a letter to alter a words pronunciation or to distinguish between similar words. ... The English language is a West Germanic language that originates in England. ... Mac OS, which stands for Macintosh Operating System, is a range of graphical user interface-based operating systems developed by Apple Computer for their Macintosh computers. ...


The following table shows how characters are encoded in Mac OS Roman. Each character is assigned a number from 0-255. The table shows the number in hexadecimal with the least-significant digit providing the column headings and the most-significant digit providing the row headings. In mathematics and computer science, hexadecimal, or simply hex, is a numeral system with a radix or base of 16 usually written using the symbols 0–9 and A–F or a–f. ...

Mac OS Roman
x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE xF
0x NUL SOH STX ETX EOT ENQ ACK BEL BS HT LF VT FF CR SO SI
1x DLE DC1 DC2 DC3 DC4 NAK SYN ETB CAN EM SUB ESC FS GS RS US
2x SP ! " # $ % & ' ( ) * + , - . /
3x 0 1 2 3 4 5 6 7 8 9 : ; < = > ?
4x @ A B C D E F G H I J K L M N O
5x P Q R S T U V W X Y Z [ ] ^ _
6x ` a b c d e f g h i j k l m n o
7x p q r s t u v w x y z { | } ~ DEL
8x Ä Å Ç É Ñ Ö Ü á à â ä ã å ç é è
9x ê ë í ì î ï ñ ó ò ô ö õ ú ù û ü
Ax ° ¢ £ § ß ® © ´ ¨ Æ Ø
Bx ± ¥ µ π ª º Ω æ ø
Cx ¿ ¡ ¬ ƒ « » NBSP À Ã Õ Œ œ
Dx ÷ ÿ Ÿ €¹
Ex · Â Ê Á Ë È Í Î Ï Ì Ó Ô
Fx Ò Ú Û Ù ı ˆ ˜ ¯ ˘ ˙ ˚ ¸ ˝ ˛ ˇ
  1. Before Mac OS 8.5, the character 0xDB mapped to currency sign (¤), but this was changed to euro currency (€).

The null character (also null terminator) is a character with the value zero, present in the ASCII and Unicode character sets, and available in nearly all mainstream programming languages. ... In telecommunication, an end-of-transmission character (EOT) is a transmission control character used to indicate the conclusion of a transmission that may have included one or more texts and any associated message headings. ... Acknowledge character (ACK): A transmission control character transmitted by the receiving station as an affirmative response to the sending station. ... Bell character is an ASCII control character, code 7 (^G). ... Backspace is the keyboard key that originally pushed the typewriter head one position backwards, and in modern computer displays moves the cursor one position backwards and deletes the preceding character. ... The tab key on a modern Windows keyboard The tab key on a keyboard is used to advance the cursor to the next tab stop. // Typewriters When a typist wanted to type a table, there was a lot of time-consuming and repetitive use of the space bar and backspace... In computing, line feed (LF) is a control character indicating that one line should be fed out. ... The tab key on a modern Windows keyboard The tab key on a keyboard is used to advance the cursor to the next tab stop. // Typewriters When a typist wanted to type a table, there was a lot of time-consuming and repetitive use of the space bar and backspace... In computing, form feed is one of control characters in ASCII.  It forces the printer to eject the current page and to continue printing at the top of another. ... Originally, carriage return was the term for the key, lever, or mechanism on a typewriter that would cause the cylinder on which the paper was held (the carriage) to return to the left side of the paper after a line of text had been typed, and would often move it... Shift Out (SO) and Shift In (SI) are ASCII control characters 14 and 15, respectively (0xE and 0xF). ... Shift Out (SO) and Shift In (SI) are ASCII control characters 14 and 15, respectively (0xE and 0xF). ... In telecommunications, a negative-acknowledge character (NAK) is a transmission control character sent by a station as a negative response to the station with which the connection has been set up. ... In telecommunication, the term cancel character has the following meanings: 1. ... Look up substitute in Wiktionary, the free dictionary. ... In computing and telecommunication, an escape character is one which has a special meaning in a sequence of characters. ... A space is a punctuation convention for providing interword separation in some scripts, including the Latin, Cyrillic, and Arabic. ... Delete can mean: To remove a file on a computer. ... In computing, a non-breaking space (NBSP) is a special space character that prevents an automatic line break (line wrap) at its position. ... Apple typography covers several topics concerning typefaces that Apple Computer has used in its marketing, operating systems and industrial design. ... Mac OS 8 is a series of versions of the Mac OS that, although they introduced few remarkable new user features, supported a transition through major changes in the Apple Macintosh hardware platform. ... The euro (€; ISO 4217 code EUR) is the currency of twelve of the twenty-five nations that form the European Union (and four outside it, as well as Montenegro and Kosovo), which form the Economic and Monetary Union (EMU). ...

See also

Several binary representations of the character sets used for Western European languages in computers are compared in this article. ...

External links

References

  • Apple Computer, Inc. (1993). Inside Macintosh: Text. New York: Addison-Wesley. ISBN 0-201-63298-5.
  • Apple Computer, Inc. (1985). Inside Macintosh Volume I. New York: Addison-Wesley. ISBN 0-201-17731-5.

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Apple - Mac OS X - UNIX (701 words)
All of the standard UNIX utilities and scripting languages are included in Mac OS X: editors such as emacs, vim and even ed; file management tools such as cp, mv, ls and tar; shell scripts including bash (the default shell), tcsh (csh) and zsh.
Mac OS X provides a robust set of optimized libraries, making it easy to port your existing UNIX code.
Since Mac OS X rarely requires you to reboot, you’ll hardly ever notice it, but Tiger takes less time to start up, thanks to launchd.
Unicode Keyboards for Mac OS (2117 words)
Create your own custom Unicode keyboard for Mac OS 9 or X! Enter your layout specification in the box below, and submit to get a keyboard resource file, resource source code that you can compile with Rez, or a hexadecimal representation that you can paste into ResEdit (see installation instructions).
In Mac OS X, installable keyboard layouts may be of one of four scripts: Roman, Cyrillic, Central European, or Unicode.
Using the "Unicode" script will deselect your keyboard and render it unselectable whenever you enter a an application that does not support Unicode, and also (although this may be a Mac OS bug) when you are in a Unicode-based application and a text entry box is not present.
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