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The size of a disk sector ranges from several hundred to several thousand bytes. A file system block is one or more sectors in size.) The unused space is called slack space or internal fragmentation. [2] Although smaller sector sizes allow for denser use of disk space, they decrease the operational efficiency of the file system.
These prefixes are more often used for multiples of bytes, as in kilobyte (1 kB = 8000 bit), megabyte (1 MB = 8 000 000 bit), and gigabyte (1 GB = 8 000 000 000 bit). However, for technical reasons, the capacities of computer memories and some storage units are often multiples of some large power of two, such as 2 28 = 268 435 456 bytes.
In this convention, one thousand and twenty-four megabytes (1024 MB) is equal to one gigabyte (1 GB), where 1 GB is 1024 3 bytes (i.e., 1 GiB). Mixed 1 MB = 1 024 000 bytes (= 1000×1024 B) is the definition used to describe the formatted capacity of the 1.44 MB 3.5-inch HD floppy disk , which actually has a capacity of 1 474 560 bytes .
1,024 bits (128 bytes) - RAM capacity of the Atari 2600: 1,288 bits (161 bytes) – approximate maximum capacity of a standard magnetic stripe card: 2 11: 2,048 bits (256 bytes) – RAM capacity of the stock Altair 8800: 2 12: 4,096 bits (512 bytes) – typical sector size, and minimum space allocation unit on computer storage volumes, with ...
8 bytes A–Z, 0–9. Period was directory separator ... 512 MiB (536.8 MB) to 16 ... Available cache space at time of write (depends on platform) No limit defined
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 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 ...
8 Mbit/s: 1 MB/s: 1975 STD-80 8-bit/8 MHz: 16 Mbit/s: 2 MB/s: 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 MHz [29] 42.4 Mbit/s ...