What is the name given to the dots that make up images?
Pixel
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What does bpp mean?
Bits per pixel, i.e. the colour depth. The more bits in each pixel, the more colours can be represented
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What are the names given to 16bpp, 24bpp and 32bpp images
High colour, true colour and deep colour respectively
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What does resolution refer to and how does it affect the size of the file?
The number of pixels per unit. For example the number of pixels per inch (ppi), commonly referred to as dots per inch (dpi). The higher the resolution, the larger the file
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What information does the computer need in order to show an image?
The metadata - height in pixels, width in pixels and colour depth
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The computer needs to convert sound from what type of data into binary in order to "understand" it?
Analogue (continuously changing)
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How does a computer convert analogue data into binary data?
It samples the data at set intervals and records the values
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What is sample rate?
The number of times the data is sampled per second, measured in Hertz (Hz). 100Hz is 100 samples per second
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What is bit rate?
The space available for each sample, measured in kilobits per second (kbits/s)
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Other cards in this set
Card 2
Front
What does bpp mean?
Back
Bits per pixel, i.e. the colour depth. The more bits in each pixel, the more colours can be represented
Card 3
Front
What are the names given to 16bpp, 24bpp and 32bpp images
Back
Card 4
Front
What does resolution refer to and how does it affect the size of the file?
Back
Card 5
Front
What information does the computer need in order to show an image?
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