Introduction to operating systems
- 1. Introduction to Operating Systems 3.1.2 q r s
- 2. Operating Systems • How many can you name?
- 3. Learning Outcomes • Describe the purpose of operating systems; • Describe the characteristics of different types of operating systems and their uses: batch, real-time, single-user, multi-user, multi-tasking and distributed systems; • Describe a range of applications requiring batch processing, and applications in which a rapid response is required;
- 4. Purpose of an OS The operating system (OS) for a standalone computer will be much simpler than that of a supercomputer which is controlling hundreds of networked terminals and executing many different kinds of job simultaneously. Nevertheless, all operating systems perform the same basic functions. These include: • Memory management; • File management (sometimes known as backing-store management); • Allocation of processor time; • Input and output management. An operating system also manages: • Interrupts; • Errors; • The human/computer interface.
- 5. Different Types of OS These are the different types of OS • batch • real-time • single-user • multi-user • multi-tasking • distributed systems You will need to find out a bit of information about these OS. But first, what is a batch operating system?
- 6. Success Criteria • What is the purpose of an operating system? – Mention at least 5 different function • Describe the different OS • Find an example of each type.