FREE ESSAY ON GRAPHICS

GRAPHICS

Graphics Packages
Graphics is a word used for all the different types of artwork, such as photographs,
graphs, charts etc.
Graphics packages
Graphics packages may not be as detailed as you think. It can be a simple paint package,
which has features of shading, drawing line diagrams and many other simple but effective
features. These packages can be an alternative to complicated DTP packages. As it is very
difficult to draw with the mouse, many people scan the drawings on the computer and now
there are software packages, which do not use a mouse.
New equipment used by professionals so that they can get pictures from a variety of
places. A video grabber lets you get pictures from the television or a video camera and
you then can alter it on your computer. A digital camera is also very popular as you can
take pictures and then put them on your PC and alter then. This also means that you do
not have to pay for the developing cost. You can also use clip art for pictures.
Bit map vector graphics
When using a graphics package the graphics file can have the image represented as a:
1.Bit map 
2.Vector image
A bit map files makes every dot or pixel on the screen has a single bit of information in
a file. If it is in colour, you then need to store additional bits. The disadvantage to
this is that if you want to alter anything you have to change it at a pixel at a time.
When you enlarge an image, the number of pixels stays the same.
In vector graphics, the lines are stored as equations on the computer. They are stored in
vectors. The advantage of vector graphics over bit map files is that it is easy to alter
things without any loss in resolution. When you enlarge an image, the number of pixels
increases to the proportion of the image. CAD packages use vector images.
Clip Art
Clip Art is a collection of copyright-free drawings which you can place on your drawings.
The drawings on clip-art look very professional, as they have been drawn in detail.
Presentation software
Pictures let you give ideas and concepts a better understanding than only words. Good
presentations use things such as slides and transparencies to express views. A projector
could be used for a large audience or a rolling slide show could be produced on a
computer for smaller audiences. 
Multimedia presentations
These presentations are useful for training students as the students can see
demonstrations and interact with the software. There are many different types of
packages, for multimedia presentations, that suit each person needs.
Colour
If you want to print out your graphics then you will need a printer. An ink-jet printer
is not that expensive if you need one or you could buy a laser printer which is a better
quality but tends to be quite expensive. If you do not have a colour printer then you do
not need to worry about colour in the design. If you use black and white on screen then
it will come clearer if you have a black and white printer.
Computer aided design
Engineers, architects, etc use CAD, short for computer aided design, so that they can
produce high quality drawings. You can have plans of houses, maps, 3-D plans of a room
etc. CAD lets the designers to make changes quite easily. They packages even let you
rotate the images at different angles. The most popular CAD package is AutoCAD, which is
quite expensive but there are many cut down versions available here are the advantages of
using CAD:
1. It can save time
2. It enables you to produce accurate scale diagrams
3. It is easy to alter images
4. You can produce a 3-D image, which is useful for diagrams of rooms, buildings etc.
5. Images can be saved on disk and retrieved later
6. Drawings can be scaled up and down
Garden design software
This is one-specialist applications of designs of software and it enables gardeners to
place their plants and features like pond and paths and see how the 3-D garden would look
like. You even can see the garden at different seasons.