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Alphanumericals or alphanumeric characters are any collection of number characters and letters in a certain language. Sometimes such characters may be mistaken one for the other. Merriam-Webster suggests that the term "alphanumeric" may often additionally refer to other symbols, such as punctuation and mathematical symbols. [1]
BCD (binary-coded decimal), also called alphanumeric BCD, alphameric BCD, BCD Interchange Code, [1] or BCDIC, [1] is a family of representations of numerals, uppercase Latin letters, and some special and control characters as six-bit character codes. Unlike later encodings such as ASCII, BCD codes were not standardized. Different computer ...
A code point is a value or position of a character in a coded character set. [10] A code space is the range of numerical values spanned by a coded character set. [10] [12] A code unit is the minimum bit combination that can represent a character in a character encoding (in computer science terms, it is the word size of the character encoding).
Mathematical Alphanumeric Symbols is a Unicode block comprising styled forms of Latin and Greek letters and decimal digits that enable mathematicians to denote different notions with different letter styles. The letters in various fonts often have specific, fixed meanings in particular areas of mathematics.
A numeric character reference refers to a character by its Universal Character Set/Unicode code point, and a character entity reference refers to a character by a predefined name. A numeric character reference uses the format &#nnnn; or &#xhhhh; where nnnn is the code point in decimal form, and hhhh is the code point in hexadecimal form.
The "escape" character (ESC, code 27), for example, was intended originally to allow sending of other control characters as literals instead of invoking their meaning, an "escape sequence". This is the same meaning of "escape" encountered in URL encodings, C language strings, and other systems where certain characters have a reserved meaning.
One brief practice was when the successive toll-free area codes were introduced (888, 877, 866, etc.), a business word or phrase would actually use one or more of the numbers in the area code. Examples of this were Rent-A-Wreck (1-87-RENT-A-WRECK or 1-US-RENT-A-WRECK), Speedpass (1-87-SPEEDPASS), and one of the first Vonage numbers (1-VONAGE ...
An alphanumeric brand name is a brand name composed only of letters and numbers (alphanumericals).Examples include 7 Up, Saks Fifth Avenue, Audi A4, Canon A75. [1] [2] They may serve as abbreviations (e.g. 3M, formerly known as the Minnesota Mining and Manufacturing Company), indicate model extensions (iPhone 3G, iPhone 4, etc.), symbolize physical product attributes (the V-shaped V8 engine ...