Operating systems

Operating systems

1. Graphical

   • graphical user interfaces known as GUI also referred to as WIMP because they use windows, icons, menus, and pointers. Operators use a pointing device (such as, mouse, touchpad or trackball) to control a pointer on the screen which then interacts with other onscreen elements. It allows the user to interact with devices through graphical icons and visual indicators such as secondary notations.

2. Command line interface

   • Command line interfaces are the oldest of the interfaces. It involves the computer responding to commands typed by the operator. This type of interface has the drawback that it requires the operator to remember range of different commands and is not ideal for novice users.

3. Menu driven

   • A menu driven interface is commonly used on cash machines ( also known as automated teller machines (ATM), ticket machines and information kiosks. They provide a simple and easy to use interface comprised of a series of menus and sub-menus which the user accesses by pressing buttons, often on a touch-screen device.

4. Form based

   • A for based interface uses text boxes drop- down menu, text areas, check boxes, radio boxes and buttons to create an electronic form which a user completes in order to enter data into a system. This is commonly used on websites to gather data from a user, or call centres to allow operators to quickly enter information gathered over the phone.

5. Natural language

   • A natural language interface is a spoken interface where the user interacts with the computer by talking to it. Also known as a " conversational interface", this interface simulates having a conversation with a computer.

6. Mac OS

7. Linux

8. Windows

9. Android

10. iOS

11. Mac OS x

12. Android

13. An operating system has three main functions: (1) manage the computers resources, such as the central processing unit, memory, disk drives, and printers, (2) establish a user interface, and (3) execute and provide services for applications software.

14. Interface- provides a user interface so it is easy to interact with the computer.

15. Manages the CPU- runs applications and executes and cancels processes.

16. Multi-tasks- allows multiple applications to run at the same time.

17. Manages memory- transfers programs into and out of memory, allocates free space between programs, and keeps track of memory usage.

18. Manage peripherals- opens, closes and writes to peripheral devices such as storage attached to the computer.

19. Organises- creates a file system to organise files and directories.

20. Security- provides security through user accounts and passwords.

21. Utilities- provides tools for managing and organising hardware.