OCR J277 1.2.3: Units
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
Everything a computer stores, every number, word, picture and sound, is stored as binary: long runs of 1s and 0s. This module is about how. It starts here, with why computers use binary at all, and the units used to measure how much data there is.
- Why binary
- Units
- How big is a picture?
Or do it in the simulator, with tasks that mark themselves
Lessons that teach it
- F8.1 Bits, bytes and units Data representation
Why computers use binary, and the units from bits to petabytes.
Try it on a robot
The task from F8.1 Bits, bytes and units, running here. Change the program and press Run.
The specification is OCR's own document; this page says which of our lessons teach point 1.2.3 and is not endorsed by the board.