Digital Media

Five different types of digital media surrounding us in the world include;
- Mobile Phones
- eBooks
- Video games
- Internet
- Computers
What number system is digital data based on? What two digits are used to code all digital data?
Digital data is based on the Binary number system and the decimal Binary system. The 2 digits that are used to code all digital data are______
What is a bit? What is a byte?
A bit stands for binary digit which is 0 or 1, it is the smallest possible unit of information.
A byte is a sequence of binary digits which are operated as a unit to represent a character. it is usually made of 8 bits.
What is sampling rate? Find an image that explains how sampling works.
A sampling rate defines the number of samples per unit of time taken from a continous signal to make a discrete signal.

How does colour depth or bit depth effect the appearance of an image? Find images to illustrate the effect.

The Colour Depth affects an image because it determines how many colours the image will have and how realistic the image will appear. An example of different colour depths include Monochrome which can be black and white which is the lowest storage requirement and 32 bit colour which can be sometimes described as 'true colour' and allows each pixel to be 1 of 256 values.

Explain why sampling rate only affects video and not Still Media and why colour depth affects both still media and videos;

Sampling rate has no effect on Still Media because it is a STILL media and therefore has no sampling rate. The sampling rate for a video is better defined as the frame rate. The unit of time of how fast and/or slow the different frames of a video changes. The colour depth affects still media because it's a single image that can be altered to make the image look more realistic. The colour depth also affects videos because a video is made up of many frames and each frame can be altered the same way still media is edited and changed.