The megabyte is a multiple of the unit byte for digital information. Its recommended unit symbol is MB. The unit prefix mega is a multiplier of 1000000 in the International System of Units. Therefore,
A PlayStation 2 memory card has a capacity of 8 megabytes (MB).
1.44 MB floppy disks can store 1,474,560 bytes of data. The full resolution image of this photograph of a floppy diskette is itself 0.842 megabytes.
The gigabyte is a multiple of the unit byte for digital information. The prefix giga- means 109 in the International System of Units. Therefore, one gigabyte is one billion bytes. The unit symbol for
Megabyte
…Timeline of binary prefixes Gigabyte § Consumer confusion Historical Notes About The Cost Of Hard Drive Storage Space…
This 2.5-inch hard drive has a capacity of 500 gigabytes (GB) of data (i.e., 500 billion bytes).