Units, Images, Sound & Compression Specs

I know and can explain how & why data needs to be converted into a binary format to be processed by a computer.

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I can convert denary whole numbers into 8 bit binary numbers and vice versa.

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I can add two 8 bit binary integers and explain overflow errors.

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I can convert positive denary whole numbers into 2 digit hexadecimal numbers and vice versa.

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I can convert from binary to hexadecimal and vice versa.

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I understand & can explain the use of binary codes to represent characters and the character sets: ASCII, Extended ASCII & Unicode.

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I understand & can explain how an image is represented as a series of pixels represented in binary, the metadata included in the image file & the effect of colour depth and resolution on the size of an image file.

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I understand & can explain how sound is sampled and stored in digital form and the impact of sample size, bit rate & sampling frequency.

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I understand & can explain need for compression & the different types of compression: lossy & lossless.

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What do you need to revise to support your development, what resources will you use for your revision and how will you assess your understanding?