Input

• What are the two types of input devices mentioned?

  Keyboard entry and direct entry
• What was the first input device developed for the PC?

  Keyboard
• 
  

  Keyboard - data is transferred over a short cable with a circular 6-pin Mini-DIN connector
• direct entry - A form of input that does not require data to be keyed by someone at a keyboard
• What do direct-entry devices create?

  Machine-readable data on paper, magnetic media, or directly into the computer's CPU
• What are the three categories of direct entry devices?

  1. Pointing devices
  2. Scanning devices
  3. Voice input devices
• What is the purpose of pointing devices?

  To move the pointer (cursor) on the screen
• What is the most common pointing device used in PCs?

  Mouse
• What features do most mice have?

  Two buttons and one or two scroll wheels
• What is a touch screen?

  A display screen sensitive to the touch of a finger or stylus
• What is a light pen?

  A light-sensitive stylus wired to a video terminal
• How does a user interact with a light pen?

  The user brings the pen to the desired point on screen and presses the pen button
• What is a digitizer tablet also known as?

  Graphics tablet
• How does a user interact with a digitizer tablet?

  The user contacts the surface with a wired or wireless pen or puck
• What is the function of scanning devices?

  To read text or illustrations printed on paper and translate the information into a usable form