Binary
Computer Science: OCR A Level, topic 4.1.6
Binary
In everyday life, we use the denary number system. Computers use binary instead.
Denary
- In everyday life, we use a denary number system.
- We use 10 symbols (0 to 9) to represent each digit.
- Each digit's place value is multiplied by 10 as we move from right to left.
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.
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.
Test yourself on Binary
Which of these are true of hexadecimal vs binary?