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The Fibre Channel 8b/10b coding scheme is also used in other telecommunications systems. Data is expanded using an algorithm that creates one of two possible 10-bit output values for each input 8-bit value. Each 8-bit input value can map either to a 10-bit output value with odd disparity, or to one with even disparity.
7 bits – the size of code points in the ASCII character set – minimum length to store 2 decimal digits. 2 3: byte (B) 8 bits – (a.k.a. octet or octad(e)) on many computer architectures. – equivalent to 1 "word" on 8-bit computers (Apple II, Atari 8-bit computers, Commodore 64, etc.).
Another example, encoding an alphabet of size 10 (between 0 and 9) requires 4 bits, but there are 2 4 − 10 = 6 unused codes, so input values less than 6 have the first bit discarded, while input values greater than or equal to 6 are offset by 6 to the end of the binary space. (Unused patterns are not shown in this table.)
An 8-bit register can store 2 8 different values. The range of integer values that can be stored in 8 bits depends on the integer representation used. With the two most common representations, the range is 0 through 255 (2 8 − 1) for representation as an binary number, and −128 (−1 × 2 7) through 127 (2 7 − 1) for representation as two's complement.
Represent the value in binary notation (e.g. 137 as 10001001) Break it up in groups of 7 bits starting from the lowest significant bit (e.g. 137 as 0000001 0001001). This is equivalent to representing the number in base 128. Take the lowest 7 bits, and that gives you the least significant byte (0000 1001). This byte comes last.
The nibble, 4 bits, represents the value of a single hexadecimal digit. The byte, 8 bits, 2 nibbles, is possibly the most commonly known and used base unit to describe data size. The word is a size that varies by and has a special importance for a particular hardware context. On modern hardware, a word is typically 2, 4 or 8 bytes, but the size ...
STD-80 8-bit/8 MHz: 16 Mbit/s: 2 MB/s: Q-bus 16-bit/async: 24 Mbit/s: 3 MB/s: 1975 ISA 8-Bit/4.77 MHz: 0 W/S: every 4 clocks 8 bits 1 W/S: every 5 clocks 8 bits: 0 W/S: every 4 clocks 1 byte 1 W/S: every 5 clocks 1 byte: 1981 (created) STD-80 16-bit/8 MHz: 32 Mbit/s: 4 MB/s: I3C (HDR mode) [28] 33.3 Mbit/s: 4.16 MB/s: 2017 Zorro II 16-bit/7.14 ...
The byte is a unit of digital information that most commonly consists of eight bits. 1 byte (B) = 8 bits (bit).Historically, the byte was the number of bits used to encode a single character of text in a computer [1] [2] and for this reason it is the smallest addressable unit of memory in many computer architectures.