Page 65 - IT-En-V3

Disk Operating System (DOS)
Operating System produced by IBM relies on writing commands to the computer
through the keyboard, which
required the user to be
experienced in the computer
field to know how to use its
commands and instructions.
This system was not easy to
use, due to the lack of a mouse.
At that time, this caused
difficulty in using the computer.
Windows operating system
Windows Operating System was developed by Microsoft, and has become the
most common operating system
due to the ease of dealing with
its graphical interface, by using
the mouse as a tool to enter
commands, and controlling the
computer has become easier,
because the Windows interface
contains drop-down menus,
windows, and graphics, and this
is what is called the term
interface. GUI – Graphical User Interface.
Several versions of Windows have appeared: Windows 95, 98, NT, (2K) 2000, XP,
Vista, Windows 7, Windows 8, all of which contain the GUI feature.

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