A part of the graphical user interface, (or GUI), used to represent programs and other items. When clicked, the icon opens its corresponding application. Icons are images normally designed to resemble something that will remind you of what the program is or does.
I/O refers to the process of entering and extracting data to and from a computer. Scanners, keyboards, cameras, and mice are examples of items used for input. Monitors, printers, and speakers, are examples of output devices. Floppy disks, hard disk drives, CD-RW drives, and memory are capable of both inputting and outputting information.
IP Address (Internet Protocol Address)
An IP Address is used to identify a specific computer using the Internet. An IP Address consists of 4 numeric parts. The first part denotes the geographic region where the computer is located. The second part identifies the company or organization the computer is linked to. The third part reveals the computer group network. The fourth and final part identifies the specific computer the user is connected to.
IRQ (Interrupt ReQuest line)
A computer contains many components that must communicate directly with the central processor. Components must request an interruption when they wish to send information to the processor. If several components try to send their information at the same time the processor will not be able to handle it. It often will cause the computer to make an error or crash. IRQ settings must be made so that no two devices send data at the same time.
ISA (Industry Standard Architecture)
ISA slots connect ISA cards to the motherboard. ISA is an 8 or 16-bit interface that operates at speeds of up to 8.33MHz. EISA or Extended ISA is a later 32-bit interface. Although the faster 32 and 64-bit PCI technology has replaced the slower ISA interface, Some sound cards, modems, and other expansion cards can still be found using the older ISA technology.