The term digital media refers to any type of media that is in an electronic or digital format for the convenience and entertainment of consumers.
Digital media includes anything that is presented in an audio (sound) or video (visual) form that can be seen and heard by others.
Examples of digital media can include
music files such as mp3, Midi or WMA files, video feeds found on the Internet at popular video websites, and animated flash or graphic design files and images used to create interactive websites and games
This is a picture of an Ipod touch which has geograophic navigation.
The computer -digital data- represents data through the binary numeral system.
What is a bit
A bit or binary digit is the basic unit of information in computing and telecommunications; it is the amount of information stored by a digital device or other physical system that exists in one of two possible distinct states. These may be the two stable states of a flip-flop, two positions of an electrical switch, two distinct voltage or current levels allowed by a circuit, two distinct levels of light intensity, two directions of magnetization or polarization, etc.
What is a byte
The byte ,is a unit of digital information in computing and telecommunications, that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and it is for this reason the basic addressable element in many computer architectures.
What is a Sampling rate?
Analog signal;
The sampling rate, sample rate, or sampling frequency defines the number of samples per second (or per other unit) taken from a continuous signal to make a discrete signal. For time-domain signals, the unit for sampling rate is hertz .The inverse of the sampling frequency is the sampling period or sampling interval, which is the time between samples.
What is colour depth and how does it affect the image?
In computer graphics, color depth or bit depth is the number of bits used to represent the color of a single pixel in a bitmapped image or video frame buffer. This concept is also known as bits per pixel (bpp), particularly when specified along with the number of bits used. Higher color depth gives a broader range of distinct colors.
How does this affect the image?
Here are a series of images, showing the difference in the images depending on the colour depth.
1 bit (2 colors) 
2 bits (4 colors)
4 bits (16 colors) 1 bit (2 colors) 2 bits (4 colors) 4 bits (16 colors) 8 bits (256 colors) 24 bits (16,777,216 colors, "truecolor")
The computer -digital data- represents data through the binary numeral system.
What is a bit
A bit or binary digit is the basic unit of information in computing and telecommunications; it is the amount of information stored by a digital device or other physical system that exists in one of two possible distinct states. These may be the two stable states of a flip-flop, two positions of an electrical switch, two distinct voltage or current levels allowed by a circuit, two distinct levels of light intensity, two directions of magnetization or polarization, etc.
What is a byte
The byte ,is a unit of digital information in computing and telecommunications, that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer and it is for this reason the basic addressable element in many computer architectures.
What is a Sampling rate?
And resulting sampled signal
What is colour depth and how does it affect the image?
In computer graphics, color depth or bit depth is the number of bits used to represent the color of a single pixel in a bitmapped image or video frame buffer. This concept is also known as bits per pixel (bpp), particularly when specified along with the number of bits used. Higher color depth gives a broader range of distinct colors.
How does this affect the image?
Here are a series of images, showing the difference in the images depending on the colour depth.
- 1-bit color (21 = 2 colors) monochrome, often black and white, compact Macintoshes.
- 2-bit color (22 = 4 colors) CGA, gray-scale early NeXTstation, color Macintoshes.
- 3-bit color (23 = 8 colors) many early home computers with TV displays
The 4bits or 8bits indicate the claritry of the picture
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