Operating System Notes
Unit – 1 Introduction . An Operating System is the Set of instructions which is provide the conventional way between the Hardware and Software. Architecture of Operating System – Functions Of Operating System – There are Various Type of Functions of Operating System 1. Memory Management 2. Processor Management 3. Device Management 4. File Management 5. Security 6. Control over system performance 7. Job accounting 8. Error detecting aids 9. Coordination between other software and users Memory Management – Memory management refers to management of Primary Memory or Main Memory. Main memory is a large array of words or bytes where each word or byte has its own address. Main memory provides a fast storage that can be accessed directly by the CPU. For a program to be executed, it must in the main memory. An Operating System does the following activities for memory man...