4.1.1

Binary

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Binary

In everyday life, we use the denary number system. Computers use binary instead.

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Denary

  • In everyday life, we use a denary number system.
  • We use 10 symbols to represent each digit.
  • Each digit's place value is multiplied by 10 as we move from right to left.
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Binary

  • Binary is an identical system, except using two symbols for each digit.
  • Only 1 and 0 are used in binary.
  • Each digit's place value is multiplied by two as we move from right to left.
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Hexadecimal

  • Hexadecimal uses 16 different symbols for each place.
  • Hexadecimal uses the digits 0-9 then A-F:
    • A = 10 in denary, B = 11 ...
  • Each digit's place value is multiplied by 16 as we move from right to left.

Jump to other topics

1Computational Thinking & Algorithms

2Programming

3Hardware & Software

4Data

5The Internet

6Online Safety & Security

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