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The PC Glossary

Definitions of Computer and Internet Terms

Computer Terms Beginning with "H"

Hacker While this term originally referred to a clever or expert programmer, it is now more commonly used to refer to someone...
Halftone A halftone image is made up of a series of dots rather than a continuous tone. These dots can be different sizes...
Handle In online chat, the name you use is often referred to as your screen name, or handle. So if you decided to name...
Hard Copy A hard copy is a printed document. It may be a text file, photograph, drawing, or any other type of printable file...
Hard Disk When you save data or install programs on your computer, the information is typically written to your hard disk. The...
Hard Drive The hard drive is what stores all your data. It houses the hard disk, where all your files and folders are physically...
Hard Token A hard token, sometimes called an "authentication token," is a hardware security device that is used to authorize a...
Hardware Computer hardware refers to the physical parts of a computer and related devices. Internal hardware devices include...
HDD HDD is short for "hard disk drive." An HDD is a storage device used to store data. Unlike RAM, which requires...
HDMI Stands for "High-Definition Multimedia Interface." HDMI is a digital interface for transmitting audio and video data...
HDTV Stands for "High Definition Televsion." HDTV is a high-quality video standard developed to replace older video formats...
HDV Stands for "High-Definition Video." According to a consortium of manufacturers including Sony, JVC, Canon, and Sharp...
Heat Sink A computer's CPU may perform millions of calculations every second. As the processor continues to work at a rapid...
Hertz Hertz (abbreviated: Hz) is the standard unit of measurement used for measuring frequency. Since frequency is...
Heuristic Generally speaking, a heuristic is a "rule of thumb," or a good guide to follow when making decisions. In computer...
Hexadecimal Hexadecimal is a base-16 number system. It is a different method of representing numbers than the base-10 system we...
HFS Stands for "Hierarchical File System." HFS is the file system used for organizing files on a Macintosh hard disk...
Hibernate If you are not going to use your computer for a few hours, it is a good idea to put it to sleep (also known as standby...
Hit Technically, a hit is a request made to a Web server. It is a popular misconception that the term refers to the number...
Home Page This is the starting point or front page of a Web site. This page usually has some sort of table of contents on it and...
Horizontal Market Software A horizontal market is one that supplies goods to a variety of industries instead of just one. Therefore, horizontal...
Host This is a computer that acts as a server for other computers on a network. It can be a Web server, an e-mail server...
Hover When you roll the cursor over a link on a Web page, it is often referred to as "hovering" over the link. This is...
HSF Stands for "Heat Sink and Fan." Nearly all computers have heat sinks, which help keep the CPU cool and prevent it from...
HTML Stands for "Hyper-Text Markup Language." This is the language that Web pages are written in. Also known as hypertext...
HTTP Stands for "HyperText Transfer Protocol." This is the protocol used to transfer data over the World Wide Web. That's...
HTTPS Stands for "HyperText Transport Protocol Secure." HTTPS is the same thing as HTTP, but uses a secure socket layer...
Hub This is a hardware device that is used to network multiple computers together. It is a central connection for all the...
Hyper-Threading Hyper-threading is a technology developed by Intel Corporation. It is used in certain Pentium 4 processors and all...
Hyperlink A hyperlink is a word, phrase, or image that you can click on to jump to a new document or a new section within the...
Hypermedia Most Web navigation is done by clicking text-based links that open new pages in a (Web browser|web_browser). These...
Hypertext Hypertext is text that links to other information. By clicking on a link in a hypertext document, a user can quickly...

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