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HCI Goals                Input Devices                             Input Devices in 3D Display Devices                    Developments in Input

FRI JUN 29 2018

INTRODUCTION

Input Technology encompasses the technology and device that is responsible to convert electronic information into another form that can be understood by humans using both visual and sound.  Here we will see that the ability of users to process and understand information that is illustrated depends on the quality and accuracy of the method used in presenting this information.

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6.1     VIDEO DISPLAY UNIT

The keyboard is one of the earliest devices used in computer systems.  There are many variations of keyboards that have been produced over the years, differing in design and key arrangements.  Each of these variations depends on some specific purpose.  Examples are:

  • Cathode Radiation Tube (CRT)

    • Raster Scan Technique

    • Random Scan Technique

  • Flat Screen Display

  • 3D Display

  • Stereoscopic and Virtual Reality System​

OUTPUT TECHNOLOGY

LECTURE 6

6.2     SOUND OUTPUT

Sound output is mostly used to issue warning notifications as well as used as a form of response.  Already mentioned, there are there are three kinds of sounds used in a computer system: the conversational voice, music and natural sounds

  • Conversation​

    • Concatenation​

    • Synthesis by Rule

  • Natural Sound and Music

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