OCR H446 1.2.2: Applications Generation
The free BugBot lessons that teach this point, a robot to try it on, and the past-paper questions that test it.
What it covers
At GCSE you met the operating system and utility software (F9.9) and wrote your own modules and used libraries (F4.5). At A level you need to classify software precisely, say what each kind is for, and argue which kind of software, and which kind of licence, suits a given situation. This lesson sorts out the vocabulary the rest of the module depends on.
- Two classes of software
- System software
- Application software
- Open source and closed source
Or do it in the simulator, with tasks that mark themselves
Lessons that teach it
- A10.1 Classifying software Operating systems, software and translators
System and application software, utilities, libraries and translators, and open versus closed source. - A10.7 Programming languages and translators Operating systems, software and translators
Machine code, assembly and imperative high-level languages, the Little Man Computer, and choosing an assembler, compiler, interpreter or… - A10.8 Stages of compilation, linkers and loaders Operating systems, software and translators
Lexical analysis, syntax analysis, code generation and optimisation, then static and dynamic linking and the loader.
Try it on a robot
The task from A10.1 Classifying software, 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.