| A | B |
| system unit | Processor, memory, and storage devices are housed in a box-like case. |
| track | Narrow recording band that forms a full circle on the surface of the disk. |
| Blu-ray | Higher quality and more capacity than standard DVDs. |
| icon | Represents an application such as word processing, or a file or document where data is stored. |
| hypertext transfer protocol | Communications standard used to transfer pages on the Web. |
| computer | An electronic device that accept data, processes and shows the results |
| information | conveys meaning and is useful to one or more people. |
| input device | is hardware that allows you to enter data. |
| keyboard | an input device that contains keys. |