AQA 7517 4.5.6.4: Bitmapped graphics
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
A bit pattern has no meaning on its own. 01000001 could be the number 65, the letter A, a grey pixel, a moment of sound or a machine code instruction: it depends entirely on how the program is told to read it. This lesson starts with how real-world signals become bit patterns at all, then compares the two ways of storing a picture.
- Bit patterns
- Analogue and digital
- ADC and DAC
- Bitmapped graphics
- Vector graphics
- Vector or bitmap?
Or do it in the simulator, with tasks that mark themselves
Lessons that teach it
- A7.7 Analogue, digital and graphics Data representation
Analogue and digital signals, ADCs and DACs, bitmapped and vector graphics and when to use each.
Try it on a robot
The task from A7.7 Analogue, digital and graphics, running here. Change the program and press Run.
The specification is AQA's own document; this page says which of our lessons teach point 4.5.6.4 and is not endorsed by the board.