A gateway is an interface that connects different
networks together - this handles the transfer of
data between the networks & any conversion that is required to enable the data that has been extracted from one network to be read in the other network.
A
Windows term - Each
program running under windows is given its own exclusive area of
memory which is protected from other applications & a general protection fault occurs if this exclusive memory is accessed by another program.
Graphic Interchange
Format
The clay-mation of the
internet. It will allow a limited form of sprite-based animation. You can add a smaller
image to a larger one and change its co-ordinates in following images.
A
bit is the smallest unit of information understood by a computer. A bit can take a value of 0 or 1. A
byte is made up of 8 bits that is large enough to contain a single character. For example the character 2 would be equivalent to "00000010" when represented as a byte . A
Kilobyte is equivalent to 1024 bytes. A
Megabyte is equivalent to 1024 Kilobytes. A
Gigabyte is equivalent to 1024 Megabytes.
An application whose purpose is to locate, retrieve &
record information from the
Internet. Developed at the University of Minnesota in 1991. The word Gopher takes its name from the words "Go for" - somebody who goes and gets anything that you ask of him or her.
A Graphical User Interface is designed so that the user can perform tasks by using a
mouse to point &
click on an
icon. The user can perform any task with either the mouse or the keyboard.
Pictures or
images, either scanned for
online use or created with graphics
software. Graphic
file formats include
GIF, JPEG,
BMP,
PCX, and
TIFF.
A piece of
hardware that is linked to the
monitor & enables the screen based output of a
program to be visible to the user.
A method used to compress and transfer
graphics images into digital in
formation; it is commonly used to transfer graphics
files on the
Internet because of its excellent display of solid colors in all
Web browsers. These files are compressed so they take up the minimum amount of space & can therefore be downloaded a lot quicker than other graphics file.
GIF files are typically used for:
Backgrounds; Displaying
banners; Advertisements; Buttons. The files unlike other graphical file types are limited to 256 colors. GIF Files are stored in a number of different formats such as: 87a; Interlaced 87a; 89a; Interlaced 89a. The interlaced versions are designed to allow the image to be gradually revealed as it is downloaded. GIF Files can also be: Animated - gives the
impression of a video. A collection of GIFS, each picture slightly different from the previous. Same principle as a film; Transparent - Blends in with the background.
Software that enables groups of people to work together - Microsoft Word documents that they can all access, change etc - the software will maintain a current version for all of the users. Very useful for large projects where a number of PC
files have to be kept up to date by a number of different people who have different responsibilities. Lotus Notes is one of the best examples of groupware
Graphical User Interface.