ASCII - The name of a character set that is used to represent text as binary., Pixel - A single dot of colour in a digital bitmap image or on a computer screen., Bitmap - An image that is made up of a grid of coloured squares., Resolution - The fineness of detail that can be seen in an image - the higher the resolution of an image, the more detail it holds., Colour depth - The amount of bits available for colours in an image., File size - How large an image file is depending on the number of colours and the resolution., Compression - Reducing the file size to make it smaller., Lossy - Some data is removed and discarded., Lossless - Files are reduced in size without the loss of data., Seven bits - The number of bits in ASCII (place a 0 to represent the 8th bit) .,

9.2.3 Representing text and images

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