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12. Operating System.

a) What are the 3 basic functions of an Operating System?

Manage, coordinate and conduct resource sharing

b) What are the 3 basic elements of an Operating System?

- Hardware

- operations control input / output

- Controller Operator Console

c) What does the acronym GUI and what is its function?

Graphics User Interface.
allow the user to give commands and work with the operating system easily,
without a deep knowledge of operating system commands.

d) In the picture windows desktop places the following elements: wallpaper, icons, start button, taskbar, active applications, minimized applications, hour.