Bandwidth
Bandwidth is the amount of data that can be
transferred in a fixed amount of time. This is usually measured in MB per
second. Therefore available bandwidth is the amount of bandwidth the user has
to use. Having a lot of bandwidth is important because the more bandwidth you
have the better connection you should get. Also bandwidth is important for I/O
devices. An example of an I/O device is a fast disk drive. Bandwidth is
important with this device because if there is a slow bandwidth the fast disk
drive may hinder its performance.
Download Speed
Download speed is the performance of the
internet connection, the speed is measured by MB per second, and this shows the
amount of data that is coming into the computer per second. The download speed
depends on your ISP and what package you have picked with them. Typically the
higher download speed you have the better and faster browsing experience you
would get. However even with high download speeds some connections are still
slow, this is due to the fact that there are many devices using the same
connection at one time, and the bandwidth is being used up by all of them
devices.
Bitmap
Bitmap is also known as BMP. It is a digital
image that is composed of matrix dots, and is lower quality than vector. For
example if you enlarge a bitmap file it may be distorted whilst vectors will
remain the same quality. Bitmap has three different types. The first being
‘.bmp, the second being ‘.gif’ and the third being ‘.jpg’
Vector
A vector tool allows you to create your own
image. For example in Adobe Fireworks you can use tools and make/edit your own
images. Also when you enlarge a vector file it will not lose its quality, but
when you enlarge a bitmap file it will lose quality. Vectors have 2 different
types of format. These are ‘.pdf’ and ‘.eps’
Mp3
MP3 is a file type used for music files. This
file can be read by nearly every device (e.g. phones, consoles, computers, mp3
players) as it is really common because when someone create music they usually
use the file type MP3 to create/save it. This file type does not support video
unlike AVI. MP3 files use less space than AVI because it is compressed, this
saves the users storage space and also makes it easy to edit the file.
AVI
AVI stands for Audio Video Interleaved. It’s a
type of file which contains videos, images and sound. This file is widely
available on PCs and are starting to come to more and more phones. AVI files
are uncompressed meaning that they need a lot more space than mp3, meaning that
the quality of the data will be much higher than it would be if the file was
compressed.
