Sin título

Operating Systems

1. An operating system is a system program that controls and organises the general operation of the computer.

2. The purpose of the operating system is it controls and organises the general operation of the computer.

   • What is the purpose of the operating system?

3. The three most common operating systems for personal computers are Microsoft Windows, Mac OS X, and Linux.

   • What are the most common operating systems in use today?

4. Provides a user interface, booting the computer, file managing, managing the hardware and software, deals with error and instructions, organises the memory between the programs.

   • Functions of an operating system?

5. A GUI ( Graphical User Interfaces) lets you use your mouse to click on icons, buttons, and menus, and everything is clearly displayed on the screen using a combination of graphics and text.

   • What is GUI?
   • Advantages A GUI allows computer users to employ visual elements, such as desktop icons, to navigate and operate software. GUIs serve as a replacement for the earlier command line interface, or CLI, approach, in which users type key terms and symbols to operate the computer. Operating systems function as a GUI on computers, smartphones and some MP3 players. You can create a more rich, and intuitive interface than is possible with CLI.
   • Disadvantages Although the GUI, or graphical user interface, has revolutionized the world of PCs, it has several noticeable disadvantages. The system that the GUI replaced, the command prompt, is still the best way to perform some computer tasks. By learning about these tasks, you can decide whether you would like to continue depending on a GUI to accomplish them. With a GUI, there is no way to directly cause a chain of computer-wide events to occur at once. You can’t easily create system events.

6. Short for command line interface, a user interface common to MS-DOS computers. The user sees the command line on the monitor and a prompt that is waiting to accept instructions from the user. The user types in the command, the computer acts on that command and then issues a new prompt for the next instruction from the user.

   • What is a CLI?
   • Advantages CLI Most folks that have computer technology as a career are familiar with using this interface, especially if they have a nix background. Background. Requires a lower threshold for the interface. This means that a relatively simple program like telnet available almost on all machines is all you need to interface via CLI.
   • Disadvantages Not intuitive, especially to a lay user. No media. Complex combinations can be difficult to remember, and slower to type but that is on a task by task basis, as often you can perform tasks faster with CLI.Disadvantages of using Command Line Interface (CLI) include its unattractive appearance. CLI are not user-friendly because they require the user to remember a lot of commands.