Search results
Results from the WOW.Com Content Network
In this convention, one thousand and twenty-four kilobytes (1024 KB) is equal to one megabyte (1 MB), where 1 MB is 1024 2 bytes. In December 1998, the IEC addressed such multiple usages and definitions by creating prefixes such as kibi, mebi, gibi, etc., to unambiguously denote powers of 1024. [ 10 ]
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
50 – 100 megabits – amount of information in a typical phone book: 2 26: 10 8: 67,108,864 bit (8 mebibytes) 2 27: 134,217,728 bits (16 mebibytes) 150 megabits – amount of data in a large foldout map: 2 28: 268,435,456 bits (32 mebibytes) 144,000,000 bits: In 1980 an 18 MB hard disk cost US$4,199, [5] equivalent to $15,527 in 2023.
Alternatively many word-oriented machines implement byte operations with instructions using special byte pointers in registers or memory. For example, the PDP-10 byte pointer contained the size of the byte in bits (allowing different-sized bytes to be accessed), the bit position of the byte within the word, and the word address of the data.
The 5.25-inch diskette sold with the IBM PC AT could hold 1200 × 1024 = 1 228 800 bytes, and thus was marketed as "1200 KB" with the binary sense of "KB". [39] However, the capacity was also quoted "1.2 MB", [ 40 ] which was a hybrid decimal and binary notation, since the "M" meant 1000 × 1024.
100 kB/s: 1981 Omninet: ... While the gross data rate equals 33.3 million 4-bit-transfers per second ... 10 MB/s: PC Card 16-bit 100 ns word mode:
The ISQ symbols for the bit and byte are bit and B, respectively.In the context of data-rate units, one byte consists of 8 bits, and is synonymous with the unit octet.The abbreviation bps is often used to mean bit/s, so that when a 1 Mbps connection is advertised, it usually means that the maximum achievable bandwidth is 1 Mbit/s (one million bits per second), which is 0.125 MB/s (megabyte per ...