human-computer interface (HCI)

human-computer interface (HCI)

1. operating systems

   • used to control the hardware directly
   • used to run the applications software

2. functions of a operating systems

   • manage and control devices
   • provide a user interface
   • provide interface between applications software and interface
   • allow installation of new hardware and software
   • handle the storage of data
   • automatically recognize new hardware

3. types of user interface

   • graphical user interface (GUI)
     • advantages
       • no specialist language needed
       • use of icons allow beginners to get to programs or items they want
     • disadvantages
       • more computer memory needed for the computer to operate
       • increased processing requirements are needed to run the GUI
   • command line
     • advantages and disadvantages of command line
       • advantages
         • quicker than going than through all the different windows
       • disadvantages
         • difficult for beginners
         • all instructions have to be remembered
   • voice driven
   • touch sensitive
     • biometric

4. WIMP graphical user interface are very popular and most have the same WIMP features

   • windows
   • icons
   • menus
   • pointers

5. voice driven

   • used to issue commands to the software
   • issue commands to the operating systems
   • enter data into the application software

6. touch sensitive

   • mp3 players
   • mobile phones
   • information kiosks
   • notebook/tablet computers
   • pos-point of sale systems

7. biometrics

   • instead of the use of passwords,finger prints can be used to gain access
   • systems will automatically recognise and allow access