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2 193: 10 58 ~ 10 58 bits – thermodynamic entropy of the sun [29] (about 30 bits per proton, plus 10 bits per electron). 2 230: 10 69 ~ 10 69 bits – thermodynamic entropy of the Milky Way Galaxy (counting only the stars, not the black holes within the galaxy) [citation needed] 2 255: 10 77: 1.5 × 10 77 bits – information content of a one ...
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
2×10 6 bit/s Video data 30 channels of telephone audio or a Video Tele-Conference at VHS quality 8×10 6 bit/s Video data DVD quality 10 7: 1×10 7 bit/s Networking Classic Ethernet: 1×10 7 bit/s Biology Research suggests that the human retina transmits data to the brain at the rate of ca. 10 7 bit/sec [5] [6] 2.7×10 7 bit/s Video data HDTV ...
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.
The term is also used in some fields of computer science and information technology to denote 1 073 741 824 (1024 3 or 2 30) bytes, however, particularly for sizes of RAM. Thus, some usage of gigabyte has been ambiguous. To resolve this difficulty, IEC 80000-13 clarifies that a gigabyte (GB) is 10 9 bytes and specifies the term gibibyte (GiB ...
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 ...
The user of these terms shall specify the applicable usage. If the usage is 2 10 or 1024 bytes, or multiples thereof, then note 2 below shall also be included with the definition. 2. As used in IEEE Std 610.10-1994, the terms kilobyte (kB) means 2 10 or 1024 bytes, megabyte (MB) means 1024 kilobytes, and gigabyte (GB) means 1024 megabytes.
As 1024 (2 10) approximates 1000 (10 3), roughly corresponding to the SI prefix kilo-, it was a convenient term to denote the binary multiple. In 1999, the International Electrotechnical Commission (IEC) published standards for binary prefixes requiring the use of megabyte to denote 1000 2 bytes, and mebibyte to denote 1024 2 bytes.