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Glossary of Computer Terms
Terms starting with alphabets 'G' & 'H'
| Term | Description |
|---|---|
| Gigabyte | A gigabyte is 2 to the 30th power, or 1,073,741,824 bytes. |
| GIF | GIF is acronym for 'Graphic Image Format'. GIF files are smaller in size as they use a maximum of 256 colors. |
| GIGO | Stands for "Garbage In, Garbage Out." It means that if invalid data or garbage is entered in a computer program, the resulting output will also be invalid data or garbage. |
| Google is the world's most popular search engine. | |
| GPU | GPU is acronym for a 'Graphics Processing Unit'. GPU is used primarily for 3D applications, |
| GUI | GUI is acronym for "Graphical User Interface." It refers to the graphical interface of a computer that allows users to click and drag objects with a mouse instead of entering text as a command line as in the case of DOS operating system. |
| Hacker | Hacker refers to someone who unauthorizedly gains access to other computers. |
| Hard Disk and Hard Drive | Please see "Know Your Computer Hardware." |
| Hardware | Computer hardware refers to the physical parts of a computer and related devices. Internal hardware devices include motherboards, hard drives, RAM, CD/DVD drives, processor etc. External hardware devices include monitors, keyboards, mice, printers, scanners etc. Please see "Know Your Computer Hardware" for details. |
| Head | 1. Head is the part of a disk drive that reads data from the magnetic surface and writes to it. 2. Head is the section of a program and web page that has information of type, creation and modification of the program/web page. |
| Heat Sink | A computer processor performs millions of calculations every second. As it continues to work at a rapid pace, it begins to generate heat. If this heat is not kept in check, the processor could overheat and destroy itself/motherboard. Therefore, a heat sink is installed over the processor, which dissipates the heat from the processor and prevents it from overheating and destroying itself. |
| Highlight | When a text/image is selected by mouse, it changes background color, it is said to be highlighted. The highlighted text/image becomes ready for change/cut/copying. |
| Hit | Hit is a single user accessing a single file from a web server. |
| Home Page | 1. It is 'front screen' or the 'first page' of a web site. 2. It also refers to the default page loaded by a browser on start. |
| Host | A computer that acts as a server for other computers on the network. |
| Hover | When a cursor moves over a link, it is said to be hovering over the link. |
| HTML | HTML is acronym for "Hyper Text Markup Language" It is the language for writing web pages. |
| HTTP | HTTP is acronym for 'Hyper Text Transfer Protocol and is used for transfer of data over world wide web. Therefore, all web addresses begin with "http://". |
| Hub | It is a hardware device used for networking of computers. |
| Hyperlink | A hyperlink, also referred to as 'link', is a word, phrase, or image on a web page that a user can click on to move to a new document or a new section within the same document. Hyperlinks or links allow users to click their way from page to page. |
| Hypertext | It is text containing hyperlinks or links to other documents. |