| A | B |
| Computer | an electronic device that accepts information and instructions from a user, manipulates the information, displays the information, and stores the information for later use. |
| Personal computer | a computer typically used by a single user, in the home or office |
| Desktop computer | a type of personal computer which sits on a desk |
| Notebook computer | a small, lightweight personal computer, designed for portability |
| Laptop computer | another name for notebook computer |
| Tablet pc | a personal computer, designed for portability, which included the capability of recognizing handwriting |
| Hand-held computer | a small computer that fits in the palm of your hand |
| PDA | a hand-held computer which is used to maintain an address book, appointment book, calculator, and notepad. |
| MP3 players | hand-held personal computers that are primarily used to store and play music |
| High-end cell phones | a hand-held computer which serves as a phone as well as a PDA |
| Mainframe computers | computers used by large businesses and government agencies to process and store large amounts of data |
| Supercomputers | the largest and fastest and most expensive computers to process a tremendous volume of data |