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Byte is used to indicate the storage capacity of memory cards, computers etc. 1 Byte is combined by 8 bits. Larger amounts of bytes are indicated as Kilobytes, Megabytes and Gigabytes. The above terms may be misleading since the exact amount of bytes is not exactly what the terms are indicating. The correct conversions are listed below:
1 Byte = 8 bits
1 Kilobyte (KB) = 1 024 Bytes
1 Megabyte (MB) = 1 048 576 Bytes
1 Gigabyte (GB) = 1 073 741 824 Bytes
Bytes are also used for indicating the transfer speed of a memory card. The transfer speed is measured by the number of bytes transmitted in a given amount of time, in this case in seconds. The most common definition to state transfer speed is in MB/sec.
KB/sec = Kilobytes per second
MB/sec = Megabytes per second
Apart from MB/sec, transfer speed is also expressed in quantity of X and sometimes in Mbps. This can be confusing and really hard to compare the different definitions with each other. A comprehensive table over the different transfer speed definitions and more information about transfer speed can be found at data transfer speed and at buying guide.
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