H.C.I-Human Computer Interface

H.C.I-Human Computer Interface

1. Operating Systems

   • This is used to control the software and hardware, directly. It also runs the application software.
   • Functions
     • -Controls devices.
     • -Provides a user interface.
     • -Hides complexity of hardware from user.
     • -Deals with errors.
     • -Provides interface between applications software and hardware.
     • -Allows installation of new hardware and software.
     • -Utilities for virus scanning, encryption, etc...
     • -Handles the storage of data.
     • -Maximize memory use.
     • -Automatically recognise new hardware.
     • -Organises resources.

2. User Interface

   • Types are:
     • -GUI- Graphical User Interface.
       • -Command Line.
         • -Voice Driven.
           • -Menu or Dialogue Boxes.
             • -Touch Sensitive.
               • -Biometric.
         • Advantages:
           • -Quicker than going through all of the different windows.
           • Disadvantages:
             • -Difficult for beginners.
               • -All instructions have to be remembered.
       • Advantages:
         • -No specialist language required.
           • -Use of icons are good for beginners.
         • Disadvantages:
           • -More memory needed.
             • -Increased processing requirements needed.

3. W.I.M.P

   • GUI's are very popular and include most of the W.I.M.P features.
     • -Windows.
       • -Icons.
         • -Menus.
           • -Pointers.

4. Voice Driven

   • Also known as voice recognition. It's used to issue commands to the software and operating system and enter data into the application software.

5. Touch Sensitive

   • This takes out the need for a keyboard. Devices include:
     • -MP3 players.
       • -Mobile phones.
         • -Information kiosks.
           • -Notebook/ tablet/ computers.
             • -POS. Point of Sale Systems.

6. Biometics

   • You can use fingerprints rather than passwords to gain access. This prevents you from forgetting your password.
     • Systems will automatically recognise and allow access.