Like ISO 646, different versions of the IBM-PC/DOS encoding were created forĭifferent world states and different languages. Necessary, characters in the 128-255 character range were modified for different As a result, the extended characters contained additional LatinĬharacters, mathematical symbols, and symbols for drawing graphical boxes. The IBM-PC was designed to be easily used by different world states forīoth business and science. The extendedĬharacters contained cartoons, explosions, and box-drawing graphics. The Mattel Aquarius (known as the worst computer of all time) wasĭesigned primarily for games and home use (of both it was ill-suited). For instance, in the early 80's eachĬomputer platform used the 128-256 range for its own particular needs - depending on the However, the values fromġ28 to 256 varied greatly from company to company. In many cases, different companies extended ASCII (or ISO-646) to the full 8 bitsĪvailable in the byte - creating a total of 256 possible values. For instance, if a 646-US textĬharacter is moved to a 646-DE (German) system, the character will change to " Ä". However, problems canĪrise if information was passed between different sets. For instance, in the Dutch version, 646-DK, the backslash character wasįor the most part, each version is compatible with one another. ![]() To handle the additional characters, many of the symbols in ASCII The number of bits in the ISO-646Įncoding is still 7-bit. This specification defined a number of variants of the ASCIIĬharacter set to use in different world states. Issue, the International Standards Organization (ISO), in 1972, created the 646 ASCII simply did not have the space to store these codes. Many languages containĪccented versions of normal Latin characters and additional characters not found inĮnglish. ISO 646 - Making ASCII International ASCII, although sufficiently expressive for English, lacks many of theĬharacters found in other world languages such as German and Dutch. "delete" and was used in the past to delete information stored on tape and punchĪlthough ASCII only contains 128 characters (only 95 not counting the controlĬharacters), it is sufficient for the English language. The first 32 characters of ASCII are reserved for control characters suchĪs Line Feed, Carriage Return, and Form Feed (new page). ![]() One of the most common character encodings is ASCII (American Standard Code forĪSCII uses a total of 7 bits to store each character code - giving a total of 128
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