For audio: WAV, FLAC, and ALAC are all lossless audio formats. MP3, MP4, and OGG are lossy audio formats.

Lossless compression basically rewrites the data of the original file in a more efficient way. However, because no quality is lost, the resulting files are typically much larger than image and audio files compressed with lossy compression. For example, a file compressed using lossy compression may be one tenth the size of the original, while lossless compression is unlikely to produce a file smaller than half of the original size.

you can reverse it but it will lose some data and become lower quality unlike lossy

Points, lines, curves, and shapes or polygons

These are based on Mathematical Expressions to represent images in computer graphics

where as vectors graphics are images that are completely described using mathematical definitions. The image below shows the principle. To the left you see the image itself and to the right you see the actual lines that make up the drawing.Each individual line is made up of either a vast collection of points with lines interconnecting all of them or just a few control points that are connected using so called Bézier curves. naan-bread It is this latter method that generates the best results and that is used by most drawing programs.

equations e.g. algorithms  

Graphic design software

• Vector illustration & page layout
• Versatile drawing and tracing tools
• Professional photo editing
• Easy website design

adobe phtoshop £24.00

BMP | Quality images | used for windows wallpaper, no real benefits over TIFF

GIF | simple web graphics | very small, great for web buttons

PNG | smaller files with no quality loss | usally supports alpha

TIF | any type of bitmap images | no loss of quality, large files

1. Resolution and Aspect Ratio 
the image never needs re-sizing

2. Highest Resolutions 
CRTs run at the highest pixel resolutions generally available.

3. Black-Level and Contrast 
Produce a very dark black and the highest contrast levels normally available. Suitable for use even in dimly lit or dark environments.

4. Color and Gray-Scale Accuracy 
CRTs produce the very best color and gray-scale. They have a perfectly smooth gray-scale with an infinite number of intensity levels whereas other screens can only do so approximately.

5. Motion Artifacts 
CRTs have fast response times and no motion artifacts. Best for rapidly moving or changing images. like sonic 2 on the Sega genisys.

Disadvantages:

1. Sharpness 
They are not as sharp as an LCD at its native resolution. Imperfect focus and color registration also reduce sharpness.

2. Interference 
All color CRTs produce annoying Moiré patterns. Many monitors include Moiré reduction, which normally doesn't eliminate the Moiré interference patterns entirely.

3. Geometric Distortion 
Subject to geometric distortion and screen regulation problems. Also affected by magnetic fields from other equipment including other CRTs.

4. Brightness 
Relatively bright but not as bright as LCDs. Not suitable for very brightly lit environments.

5. Screen Shape 
Some CRTs have a rounded spherical or cylindrical shape screen. Newer CRTs are flat.

6. Emissions 
CRTs give off electric, magnetic and electromagnetic fields. There is considerable controversy as to whether any of these pose a health hazard, particularly magnetic fields. The most authoritative scientific studies conclude that they are not harmful but some people remain unconvinced.

7. Physical 
They are large, heavy, and bulky. They consume a lot of electricity and produce a lot of heat.

LCD's: Advantages

1. Sharpness 
Image is perfectly sharp at the native resolution of the panel. LCDs using an analog input require careful adjustment of pixel tracking/phase..

2. Geometric Distortion 
Zero geometric distortion at the native resolution of the panel.

3. Brightness 
High peak intensity produces very bright images. Best for brightly lit environments.

4. Screen Shape 
Screens are perfectly flat.

5. Physical 
Thin, with a small footprint. Consume little electricity and produce little heat.

Disadvantages:

1. Resolution 
Re-scaling results in significant image degradation, particularly for fine text and graphics.

2. Interference 
Automatic pixel tracking/phase controls seldom produce the optimum setting.

3. Viewing Angle 
Limited viewing angle. Brightness, contrast, gamma and color mixtures vary with the viewing angle.

4. Black-Level, Contrast and Color Saturation 
LCD's have difficulty producing black and very dark grays. As a result they generally have lower contrast than CRTs.

5. White Saturation
The bright-end of the LCD intensity scale is easily overloaded, which leads to saturation and compression. When this happens the maximum brightness occurs before reaching the peak of the gray-scale or the brightness increases slowly near the maximum.

6. Color and Gray-Scale Accuracy 
The internal Gamma and gray-scale of an LCD is very irregular. Special circuitry attempts to fix it, often with only limited success. LCDs typically produce fewer than 256 discrete intensity levels.

7. Bad Pixels and Screen Uniformity 
LCDs can have many weak or stuck pixels, which are permanently on or off. Some pixels may be improperly connected to adjoining pixels, rows or columns. Also, the panel may not be uniformly illuminated by the backlight resulting in uneven intensity and shading over the screen.

8. Motion Artifacts 
Slow response times and scan rate conversion result in severe motion artifacts and image degradation for moving or rapidly changing images.

9. Aspect Ratio 
LCDs have a fixed resolution and aspect ratio. For panels with a resolution of 1280x1024 the aspect ratio is 5:4=1.25, which is noticeably smaller than the 4:3=1.33 aspect ratio for almost all other standard display modes. For some applications may require switching to a letterboxed 1280x960, which has a 4:3 aspect ratio.

10. Cost 
Considerably more expensive than comparable CRTs.

when your so broke that you buy a CRT

SSD can handle drops and shacks better than a HDD this is because they do not have any mechanical moving parts that can be easily disturber and damaged.

SSDs produce less heat than a conventional HDD this is because they do not have mechanical moving parts such as Motors that produce lot's of heat. They only have a PCB board that contains lot's of flash memory and a driver this setup produces next to no heat under normal stress conditions. 

SSDs have less malfunctions this is because they do not have moving parts that are more likely to wear down and cause problems.

SSDs can support higher read and write speeds than HDDs this is because they memory can run at can run at higher speeds (flash Memory).

Limitations:

SSDs have a limited amount of write cycle this number will be different depending on each SSD but what ever the number the write cycles are considerable less than a conventional HDD.

SSDs do not give a warning to when they will stop working, they will stop working intently and not work again. The way it to predict its life time and replace it before it go dead.

They are more costly than the standard HDD this is becasue the memory costs more (flash memory).

The spinning of the platters can sometimes result in vibration

HDD doesn’t produce much heat, but it will have a measurable amount more heat than an SSD due to moving parts and higher power draw

Slower than SSD

Magnets can erase data

Can’t be accessed from anywhere outside of your local network