The three type of user interface are: (1) Command-Line; (2) Menu-Driven; & (3) Graphical User Interface.
Command-Line User Interface
This interface requires users to type commands or press special keys to enter data & instructions that instruct the OS what to do. It has to be typed one line at a time.
It is difficult because it requires exact spelling, syntax or a set of rules of entering commands & punctuation.
We must observe the complicated rules of syntax that specify exactly what you can type in a given place. This interface also requires memorisation. The advantage is, it helps the user to operate the computer quickly after memorizing the keywords and syntax.
Menu Driven Interface
Menu-driven user interface enables the user to avoid memorizing keywords such as copy, paste and syntax. On-screen, menu-driven interface provide menus as means of entering commands. It shows all the options available at a given point in a form of text-based menu. Menu-driven user interfaces are easy to learn.
Graphical User Interface (GUI)
GUI makes use of the computer’s graphics capabilities to make the OS & programs easier to use (user-friendly). GUIs are used to create the desktop that appears after the operating system finishes loading.
We can easily differentiate the interfaces between Mac OS, Windows XP or Linux by looking at their desktops. GUI with menus and visual images such as buttons, icons and other graphical objects to issue commands.
On the desktop, we can initiate many actions by clicking icons that represent computer resources such as files, programs and network connections.
Command-Line User Interface
This interface requires users to type commands or press special keys to enter data & instructions that instruct the OS what to do. It has to be typed one line at a time.
It is difficult because it requires exact spelling, syntax or a set of rules of entering commands & punctuation.
We must observe the complicated rules of syntax that specify exactly what you can type in a given place. This interface also requires memorisation. The advantage is, it helps the user to operate the computer quickly after memorizing the keywords and syntax.
Menu Driven Interface
Menu-driven user interface enables the user to avoid memorizing keywords such as copy, paste and syntax. On-screen, menu-driven interface provide menus as means of entering commands. It shows all the options available at a given point in a form of text-based menu. Menu-driven user interfaces are easy to learn.
Graphical User Interface (GUI)
GUI makes use of the computer’s graphics capabilities to make the OS & programs easier to use (user-friendly). GUIs are used to create the desktop that appears after the operating system finishes loading.
We can easily differentiate the interfaces between Mac OS, Windows XP or Linux by looking at their desktops. GUI with menus and visual images such as buttons, icons and other graphical objects to issue commands.
On the desktop, we can initiate many actions by clicking icons that represent computer resources such as files, programs and network connections.
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