OPERATING SYSTEMS
-Apoorva Singh
Uses of operating system
- runs program
- manages devices
- manages applications
- manages software
- handles file permission
- prevents crashing
- provides interface between computer and user
- can be graphical(gui-graphical user interface)(menus and icons)or command-like(where the user types in commands)
- or natural language(where the user talks to the interface)
- memory based-gives user a selection of options
- memory locations could be read,modified or written to
- lets you manage files(make,move or delete files)
- co ordinate basic input and output
- device driver lets your computer os talk to input/output devices
- divides the cpu into time slots
- cpu also ensures security
- one of the major functions of os is memory management
- controls the BIOS
- a device driver is a small piece of software and it allows hardware devices to be used by the operating system
- os coordinates how all the other software works
- it divides tasks into a ‘slice of time’
- it prevents unauthorised access
Different types of os
Linux
Unix
Android