Edexcel 1CP2 2.1.6: Hexadecimal
The free BugBot lesson that teach this point, a robot to try it on, and the past-paper questions that test it.
What it covers
Binary is what the computer uses, but it is long and easy to misread: 11111111 10000000 00000000 is one colour. Hexadecimal, or hex, is base 16, and it writes the same value in a quarter of the digits: FF8000. Web colours, error codes and network addresses are all written in hex, and so is the robot's LED.
- Sixteen digits
- Binary and hex
- Hex and denary
- Colours in hex
- Why hex?
Or do it in the simulator, with tasks that mark themselves
Lessons that teach it
- F8.3 Hexadecimal Data representation
Base 16, converting to binary and denary, and the LED's colour codes.
Try it on a robot
The task from F8.3 Hexadecimal, running here. Change the program and press Run.
The specification is Edexcel's own document; this page says which of our lessons teach point 2.1.6 and is not endorsed by the board.