HCI interfaces can take several forms: menu-driven, command line, graphical user interface (GUI), and natural language. Menu-driven interfaces use drop-down menus for navigation and are partly customizable and user friendly. Command line interfaces use specially written commands but are not customizable, difficult to use, and not attractive. GUIs use icons that can be highly customized and are very easy and attractive to use. Natural language interfaces use voice but can be confusing due to varying voices. HCI interfaces also require adaptations for different users. Interfaces for elderly users feature large, high-contrast icons and simple menus. Interfaces for those with low education are very simple. Cultural adaptations, like changing a GUI from

2. WHAT IS
HCI?

3. HCI: WHAT ARE THE DIFFERENT TYPES
OF INTERFACES?
Menu Driven Command
Line
Graphical User
Interface (GUI) Natural
Language

4. Command
Line

5. MENU
DRIVEN

6. Graphical User
Interface (GUI)

7. NATURAL LANGUAGE

8. HOW ARE THE HCI
INTERFACES DIFFERENT?
Menu-Driven Command Line Natural Language Graphical User
Interface (GUI)
Uses drop down or pull Uses specially written Uses natural Uses icons are clicked
up menus for commands for commands, such as to navigate the user
navigation navigation voice for navigation (folder to folder)
Easy to use because of Difficult to use because Confusing to use since Very easy to use
contextual menus a special language is voices vary in pitch because user points and
required clicks
Partly customisable; Not customisable; no Not customisable; Highly customisable;
only some items are changes to interface changes can’t be made 98% of interface
movable appearance to mic sensitivity elements are
changeable
User friendly Not user friendly User friendly User friendly
Attractive Not attractive Attractive Highly attractive

9. HCI INTERFACE
ADAPTATIONS FOR HUMANS
WITH DIFFEERING:

10. AGE
ADULT (YOUNG & ADAPTED INTERFACE
CHILD ELDERLY) ADAPTED INTERFACE

 Icons areare bright people with poor vision) of high contrast
Colours large (for and blend various degrees
 colours
Colours have to have a matching scheme

 Menusare easily placed too childish
Icons should not appear

 Interface shouldas simple as possible
Menus are kept be designed to facilitate customisation
 Big buttons are used for most options

11. EDUCATION

12. DISABILITIES

13. Culture
English Interface Arabic Interface
Language reads left to right Language reads right to left
In case of GUI, icons are easily Icons are oddly placed and
and ideally placed require a working knowledge of
the interface to operate efficiently
Offers more colour Offers significantly less colour,
interface may even appear to be
bare

14. ACCESSIBILITY