Are gigabites larger than megabites

Yes.

1 Bit = the smallest bit of information. Basically, one character (e.g. letter, number, symbol, space, etc)

1 Byte = about 8 bits

1 Kilobyte (Kb) = 1024 bytes (the first binary number above 1000)

1 Megabyte (Mb) = 1,048,576 bytes (1024 Kb) (1000 x 1000 bytes)

1 Gigabyte (Gb) = 1024 Mb (1000 x 1000 x 1000 bytes)

etc

Basically, most people take each figure as 1000 of the previous thing

After Gigabyte you have Terabytes, Petabytes, Exabytes, Zettabytes, and Yottabytes

Average Word document (letter, essay, etc) = under 100 Kb

Average photo from a digital camera (unedited) = under 2Mb

Average 3 minutes MP3/music file = 4Mb

Average USB flash drive/memory stick or iPod/MP3 Player = 1Gb

Average laptop computer = 80-160Gb

You can buy 500 Gb external hard drives (half a terabyte) - which would store many many hours of video, billions of music albums and other documents

Microsoft Office takes up about 1Gb, not including any documents you create.

Photoshop, as well as video editing software, takes up more like 10GB (roughly).

Loads of info about it at http://www.answers.com/topic/byte?cat=biz-fin