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computing (Hex (How it works (● A hex digit can be any of the following 16…
computing
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Images
Pixels
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● The more pixels on the screen, the higher the resolution and the better the quality of the picture will be
● The higher the image resolution, the more memory is needed to store the graphic
Colour depth
Colour depth or bit depth is the number of bits used to represent the colour of a single pixel, in other words, bits per pixel.
● The more bits used, the better the quality of the colour because more colours can be
encoded.
Bitmap: An image file format where the picture is represented as a set of dots or pixels, when resized the image can go pixelated
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Compression
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Lossy compression: we lose some of the data and cannot get it back. Usually lower quality but a greater reduction in file size
Lossless: it compresses without losing data but usually not as much. usually higher quality but less of a reduction in file size
Binary
Binary addition
0+0=0, 1+0=1, 1+1=10 (binary for 2) 1+1+1=11 (binary for 3)
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