The following pages will introduce computer science concepts that are useful for understanding how a computer works.

- What are bits and bytes?
- Not all gigabytes are equal.
- Powers of two.
- Powers of 2 from 2
^{0}to 2^{1024}. - What is a hexadecimal number?
- Decimal, binary and hexadecimal converter.
- Decimal, binary and hexadecimal numbers from 0 to 255.

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