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The bit is the fundamental unit of information, which represents a single yes or no. So, one could measure the amount of information in a single letter with 5 bits (because 2^5 is 32, there are 26 letters in the English language), but because we also use other characters, like numbers, capital/lowercase letters, symbols (like ...
2 0: bit: 10 0: bit 1 bit – 0 or 1, false or true, Low or High (a.k.a. unibit) 1.442695 bits (log 2 e) – approximate size of a nat (a unit of information based on natural logarithms) 1.5849625 bits (log 2 3) – approximate size of a trit (a base-3 digit) 2 1: 2 bits – a crumb (a.k.a. dibit) enough to uniquely identify one base pair of DNA
An alternative system of nomenclature for the same units (referred to here as the customary convention), in which 1 kilobyte (KB) is equal to 1,024 bytes, [38] [39] [40] 1 megabyte (MB) is equal to 1024 2 bytes and 1 gigabyte (GB) is equal to 1024 3 bytes is mentioned by a 1990s JEDEC standard. Only the first three multiples (up to GB) are ...
When b is 2, the unit is the shannon, equal to the information content of one "bit". A system with 8 possible states, for example, can store up to log 2 8 = 3 bits of information. Other units that have been named include: Base b = 3 the unit is called "trit", and is equal to log 2 3 (≈ 1.585) bits. [3] Base b = 10
The bit is the most basic unit of information in computing and digital communication. The name is a portmanteau of binary digit. [1] The bit represents a logical state with one of two possible values. These values are most commonly represented as either " 1" or "0 ", but other representations such as true/false, yes/no, on/off, or +/− are ...
1.8 kB/s: HSCSD: 57.6 kbit/s: 7.2 kB/s: 14.4 kbit/s: 1.8 kB/s: GPRS (2.5G) 57.6 kbit/s: 7.2 kB/s: 28.8 kbit/s: 3.6 kB/s: WiDEN: 100 kbit/s: 12.5 kB/s: 100 kbit/s: 12.5 kB/s: CDMA2000 1×RTT: 153 kbit/s: 18 kB/s: 153 kbit/s: 18 kB/s: EDGE (2.75G) (type 1 MS) 236.8 kbit/s: 29.6 kB/s: 236.8 kbit/s: 29.6 kB/s: 2002 UMTS 3G: 384 kbit/s: 48 kB/s: 384 ...
The 640 KB barrier is an architectural limitation of IBM PC compatible PCs. The Intel 8088 CPU, used in the original IBM PC, was able to address 1 MB (2 20 bytes), since the chip offered 20 address lines.
On the other hand, a hard disk whose capacity is specified by the manufacturer as "10 gigabytes" or "10 GB", holds 10 × 10 9 = 10 000 000 000 bytes, or a little more than that, but less than 10 × 2 30 = 10 737 418 240 and a file whose size is listed as "2.3 GB" may have a size closer to 2.3 × 2 30 ≈ 2 470 000 000 or to 2.3 × 10 9 = 2 300 ...