M (1) Prefix mega; 1,000,000. (2) When refering to
computer storage
capacity, 1,048,576 (1,048,576= 2 to the 20th power)
Also
Mb 1,048,576 bytes.
Incidentaly, it also defines
Gb 1,073,741,824 bytes (=2^30 ARD)
Just on a side note, I always thought that the proper way to state
the abbreviations were MB and GB _not_ Mb and Gb. With the
caps B meaning Byte and the little b meaning bit. So 8Mb would
be 8 MegaBits while 8MB would be 8MegaBytes, ethernet would
be 10Mbps while fast SCSI is 10MBps (slight difference).
George