| Term | Definition |
|---|
| Group breaks | Reports are often broken into subsections so that data in each section is grouped together by some common feature. For example, a sales report might group items by department, with subtotals for each department. |
| Group decision support system (GDSS) | A type of groupware that is designed to facilitate meetings and help groups reach a decision. Each participant uses a networked computer to enter ideas and comments. Votes can be recorded and analyzed instantly. Comments and discussion are automatically saved for further study. |
| Groupware | Software designed to assist teams of workers. There are four basic types: communication, workflow, meeting, and scheduling. The most common is communication software that supports messages, bulletin boards, and data file transfers and sharing. |
| Hacker | Primarily used to indicate a person who devotes a great deal of time trying to break into computer systems. |
| Hardware | Hardware consists of the physical equipment used in computing. |
| High-Definition Television (HDTV) | Transmission of television signals in digital form. It provides clearer reception. It also supports encrypted transmissions so broadcasters can control who receives the images. HDTV also supports compression, so more data (better pictures or more channels) can be transmitted in the same frequency space. |
| Hot links | A means of linking data from multiple documents. One compound document (or container) can hold data objects created by other software. As the original data is changed, it is automatically updated in the container document. See also Static integration. |
| Hot site | A facility that can be leased from a disaster backup specialist. A hot site contains all the power, telecommunication facilities, and computers necessary to run a company. In the event of a disaster, a company collects its backup data tapes, notifies workers, and moves operations to the hot site. |
| Hub | A network device used to connect several computers to a network. Commonly used in a twisted-pair LAN. A cable runs from each computer's NIC to the hub. The hub is often connected to a router. |
| Hypertext markup language (HTML) | The standard formatting system used to display pages on the Internet. Special tags (commands inside angle braces, e.g., <HTML>) provide formatting capabilities. Several software packages automatically store text in this format, so users do not have to memorize the tags. |
| Icon | A small picture on a computer screen that is used to represent some object or indicate a command. A classic example is the trash can used to delete files on the Apple Macintosh. |
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