OCR J277 1.2.2: Secondary storage
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
RAM forgets everything when the power goes off, so a computer also needs secondary storage: non-volatile storage that keeps programs and files until they are deleted. Your saved lesson work, the photos on a phone, and the program saved on BugBot all live in secondary storage. There are three technologies, and choosing between them is a favourite exam question.
- Why secondary storage?
- Three technologies
- Choosing storage
- Cloud storage
- Speed matters too
Or do it in the simulator, with tasks that mark themselves
Lessons that teach it
- F9.7 Secondary storage Logic and computer systems
Magnetic, optical, solid state and cloud storage, and choosing between them.
Try it on a robot
The task from F9.7 Secondary storage, running here. Change the program and press Run.
The specification is OCR's own document; this page says which of our lessons teach point 1.2.2 and is not endorsed by the board.