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Code page 437 (CCSID 437) is the character set of the original IBM PC (personal computer). [2] It is also known as CP437, OEM-US, OEM 437, [3] PC-8, [4] or DOS Latin US. [5] The set includes all printable ASCII characters as well as some accented letters (), Greek letters, icons, and line-drawing symbols.
IBM introduced eight-bit extended ASCII codes on the original IBM PC and later produced variations for different languages and cultures. IBM called such character sets code pages and assigned numbers to both those they themselves invented as well as many invented and used by other manufacturers. Accordingly, character sets are very often ...
The final 1985 revision of the secondary character set was also standardized by IBM in 1989 as code page 1050 (CP1050 or ibm-1050). [ 16 ] Although strictly speaking not part of Roman Extension, the following table shows those rows of the primary character set that differed from ASCII.
On many Unix systems and early dial-up bulletin board systems the only common standard for box-drawing characters was the VT100 alternate character set (see also: DEC Special Graphics). The escape sequence Esc ( 0 switched the codes for lower-case ASCII letters to draw this set, and the sequence Esc ( B switched back:
In the case when there is a plethora of character sets (like in IBM), identifying character sets through a number is a convenient way to distinguish them. Originally, the code page numbers referred to the page numbers in the IBM standard character set manual, [4] [5] [6] a condition which has not held for a
Extended Binary Coded Decimal Interchange Code [1] [2] (EBCDIC; [1] / ˈ ɛ b s ɪ d ɪ k /) is an eight-bit character encoding used mainly on IBM mainframe and IBM midrange computer operating systems.
IBM-932 contains 7-bit ISO 646 codes, and Japanese characters are indicated by the high bit of the first byte being set to 1. Some code points in this page require a second byte, so characters use either 8 or 16 bits for encoding.
IBM offer the same extended double-byte codes in their code page 943 (IBM-943 or CP943), [5] which is a combination of the single-byte Code page 897 and the double-byte Code page 941. [ 6 ] Windows-31J is the most used non- UTF-8 /Unicode Japanese encoding on the web.