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Cover the following material to motivate this point:
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Tell students that computers only store 0s and 1s.
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Explain that we can interpret 0s and 1s as letters or pictures and a lot of other things!
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Show students an ascii table.
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Have them convert letters to 0s and 1s.
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Explain that the computer interprets a 0 as a 0. It looks exactly the same whether it’s a part of a letter or a part of a picture.
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Next, explain the need to specify how the computer interpret 1s and 0s.
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This is why it is so important to define the types of variables.
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For example, the computer will know to interpret 1s and 0s representing the variables x and y differently because of their type declarations.
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int x = 10; char y = 'a';