A device that plugs in to your computer's system unit and provides auxiliary functions. (Also called a card.)
The location of an Internet host. An email address might take the form johndoe@xyz.com; a web address might look like www.xyztech.com.
A computer program designed for a specific task or use, such as word processing, accounting, or missile guidance.
A file, such as a Word document or graphic image, attached to an email message.