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In contrast, a 4-byte binary two's complement integer can represent values from −2,147,483,648 to +2,147,483,647. While packed BCD does not make optimal use of storage (using about 20% more memory than binary notation to store the same numbers), conversion to ASCII , EBCDIC, or the various encodings of Unicode is made trivial, as no ...
Binary-coded decimal(BCD) is a binary encoded representation of integer values that uses a 4-bit nibbleto encode decimal digits. Four binary bits can encode up to 16 distinct values; but, in BCD-encoded numbers, only ten values in each nibble are legal, and encode the decimal digits zero, through nine.
In mathematics and computing, the hexadecimal (also base-16 or simply hex) numeral system is a positional numeral system that represents numbers using a radix (base) of sixteen. Unlike the decimal system representing numbers using ten symbols, hexadecimal uses sixteen distinct symbols, most often the symbols "0"–"9" to represent values 0 to 9 ...
Bytes 0xA1 through 0xFE are used for both lead and trail bytes for double-byte (Big5) codes. Bytes 0x40 through 0x7E are used as trail bytes following a lead byte, or for single-byte codes otherwise. If the second byte is not in either range, behavior is unspecified (i.e., varies from system to system).
An 8-bit byte can represent 256 (2 8) distinct values, such as non-negative integers from 0 to 255, or signed integers from −128 to 127. The IEEE 1541-2002 standard specifies "B" (upper case) as the symbol for byte ( IEC 80000-13 uses "o" for octet in French, [ nb 1 ] but also allows "B" in English).
Comparison of data-serialization formats. This is a comparison of data serialization formats, various ways to convert complex objects to sequences of bits. It does not include markup languages used exclusively as document file formats .
Code points are commonly used in character encoding, where a code point is a numerical value that maps to a specific character. In character encoding code points usually represent a single grapheme —usually a letter, digit, punctuation mark, or whitespace—but sometimes represent symbols, control characters , or formatting. [4]
This is a list of some binary codes that are (or have been) used to represent text as a sequence of binary digits "0" and "1". Fixed-width binary codes use a set number of bits to represent each character in the text, while in variable-width binary codes, the number of bits may vary from character to character.