Computer Science › Section B · Data storage › Topic B.5
The binary system
Every number a computer handles is ultimately a row of 0s and 1s. Reading, writing and adding those rows by hand is the skill that makes integers, fractions and every later data format make sense.
In this topic
- Place value with a different base
- Reading a binary numeral
- From decimal to binary: subtract powers of two
- Worked example: repeated division by two
- Adding in binary
- Worked example: adding two binary numbers
- Fractions and the radix point
- Worked example: a decimal fraction in binary
- Hexadecimal as a number system
- Common mistakes to avoid
- Key takeaways
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