Digital Media

First off let see if we can list how many forms of digital media surround:

• Phone
• Ipod
• Tv
• Computer
• PsP

What number system is digital data based on? What two digits are used to code all digital data? 

• Binary System
• 0-1

What is a bit? What is a byte?

• Bit: A bit or binary digit is the basic unit of information in computing and telecomunications
• Byte: a sequence of 8 bits (enough to represent one character of alphanumeric data) processed as a single unit of information

What is “sampling rate”? Find an image that explains how sampling works (Wikipedia is a good resource here…you can place these images in your blog)

• (telecommunication) the frequency of sampling per unit time
•   this picture shows what sampling rate is.
       

How does Colour Depth (Color Depth) or bit depth effect the appearance of an image? Find some images to illustrate the effect.

• The more bit the finer and more colour

1 bit

2 bit



4 bit



8 bit



24 bit



Colour depth effects both still and video digital media. Sampling rate only effects video but not still media. Can you explain.

•   colour dpeth can change the colour depth for any fram/ picture where sapmling rate is for more than one frame a still media only has one frame