Computer viruses are spread over electronic networks or when infected software disks are passed among users.

Businesses oppose the tax, contending it is unlawful because although the software disks are tangible, they are worth just a few dollars each.

I just bought four software disks from Amazon.com.

Viruses are rogue computer programs secretly slipped into software disks or computer communications.

There may well be a First Amendment issue here: Americans prize the right to circulate ideas, including those on software disks.

When you bought a Steve Jackson Game, you did not receive any software disks.

Carry-a-Tune's original software disk version was released in 2003.

The security assumption was that copying the manual was more difficult than copying the software disk.

If you don't have all your software disks, you will want to back up your whole computer, at least occasionally.

Five hundred glossy full-colour pages plus a free software disk for less than two quid.