Digital Media

• Forms of digital media that surround us is a blank CD, blank DVD, Blu-ray disc, USB Flash Drive and a digital media player.
• The number system that digital data is based on is the binary number system. The two digits that are used to code all digital data is 23.
• Bit: a unit of measurement of information (from binary + digit); the amount of information in a system having two equiprobable states.
• Byte: a unit of digital information in computing and telecommunications.
• Sampling Rate: the frequency of sampling per unit time

Image of Sampling rate

• Colour depth affects the apperance of an image by altering the colour quality depending onthe amount of bytes or bits in that particular image. For example if you have one or two bits in an image you will only have a monochrome coloured image. Whereas is you have an image with more bytes you will get a better quailty image with 64 bytes being the largest so far.
• Sampling rate only affects video as it takes the sample per second, a video is a moving image and therefore the sampling rate would take the images per second. However colour depth only affects still and video digital media. Nothing is produced in still images and therefore a sampling rate is not affected