A file sent with an email, hence it is 'attached'. The file can then be opened at the other end. It remains self-contained, and is unaffected by the contents of the email itself.
"The 'R' in CD-R means Recordable. If you have the correct CD drive, you can write information to these discs. Now cheap, they're ideal for storing backups"
WIZARD: Guides you through a complicated task step-by-step. This one helps you set up an internet connection
CD-ROM (Compact Disc Read-Only Memory) is a data CD storing just under 650MB of data - around 450 old-fashioned floppy disks! You can't write information to these discs. If you get a CD with a product, or free in the paper, it's a CD-ROM. The 'R' in CD-R means Recordable. If you have the correct CD drive, you can write information to these discs. As they're now cheap and disposable, they're ideal for storing backups of your research. But once they're written on, you can't re-write them - there are discs you can re-write to, called CD-RW, for Re-Writeable.
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