I/O Port A port on a computer to which input devices such as a keyboard or mouse, or output devices such as a monitor or printer can be connected. I/O ports can be serial or parallel.
IBM-compatible A term to describe computers that are clones of the IBM PC that are manufactured by another manufacturer.  These devices are capable of running software written for the IBM PC.
Icon A small picture representing an application or document. Each icon consists of the graphic and a title. When a user double-clicks the icon it will either start the application or open the document.
IDE Integrated Device Electronics (IDE) is the base standard interface used to connect PC hard drives to the system. In all IDE devices the disk controller is incorporated into the drive itself, rather than it being on a separate controller card.
Illegal Character An arrangement of bits that is not recognised as a character by a particular system.
Image Map A navigation tool that you see in many Web sites. You load a page, and there's a big graphic in the middle of the page. On the graphic are a host of different links to various locations.
Image Slicing The process of cutting a large graphic into multiple smaller graphics. Because different types of images display well as different types of files, this method lets you optimise the graphic more effectively, using the best combination of compression and display quality.
Incremental Backup A backup type that backs up only those selected files that have been created or changed since the last full or incremental backup. It also sets the archive bit to off to indicate that they have been backed up.
Integration The use of software or hardware to interconnect any number of computer systems so that they can pass data back and forth.
Interface An electronic assembly that connects a device such as a disk drive to the CPU.
Interlaced GIF An interlaced GIF is a picture file that appears in phases--first as a blurry image with just a few pixels, then as a slightly sharper image with a few more pixels, and so on. The result is that you see the entire picture sharpen gradually rather than see the picture appear in slow, sharp bands.
Interoperability The ability of hardware and software made by different manufacturers to work together seamlessly.
IPv6 Internet addresses are numbers. Domain names are just tacked on top of the numbers because words are easier to remember. The Internet Protocol (or IP) determines just how the numbers are assigned. Today's protocol is running short: Because there are so many Internet addresses, we'll soon be out of new numbers, which will restrict new Internet devices just like running out of phone numbers can restrict new telephone installations.
But, just as phone companies add new area codes to expand their numbers, the Internet Engineering Task Force (or IETF) has come up with a new IP protocol called IPv6. With many times more numbers, it solves the capacity problem. But v6 also includes assigning a permanent ID code to every Internet device. This worries privacy advocates who foresee Web sites eagerly watching and remembering everything we do, write, browse, buy, and chat about online.
IRC IRC stands for "Internet Relay Chat," the area of the Internet where you can "chat" with other users (that is, type and send messages that the other user or users see as soon as you send them).
IrDA Acronym for Infrared Data Association.  This gives a computer the ability to connect devices such as mobile phones and printers via an infrared port.  In the case of mobile phones, they are seen by the IrDA device as a modem and can therefore connect the PC to the Internet via the mobile phone network.
ISDN Integrated Services Digital Network (ISDN) lines offer instant connection at 128Kbps for uploads and downloads. That beats typical 56K modem speeds by three or four times. ISDN can also carry voice signals on the same lines and with more features than typical phone lines. Best of all, ISDN is nearly always available--unlike faster DSL and cable connections, which are still relatively rare.
IT Information Technology
IT&T Information Technology & Telecommunications


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This page was last updated on Sunday, 14 December 2008