Operating system

1. Definition
2. The main functions of the operating system
3. Questions
4. Exercises

11.3.1.3 describe the purpose and main functions of operating systems

Software: System software & Application software

11.3.1.1 classify software

Classification of Application software

1. Definition
2. Comparison of Off-the-shelf software and Custom software
3. Questions
4. Exercises
5. Exam questions

11.3.1.1 justify the choice of applied software and choice criteria based on the goals 

11.3.1.2 classify application software

Files are useful not just for the information they hold, but the way they hold that information...