Output Devices Overview

Definition

• Devices connected to the computer to output information provided by the CPU.
• Known as output peripherals.
• Outputs can be electronic display, printed materials, video, audio, and tactile forms.

Types of Output Peripherals

Monitors

• Function: Provides electronic display.
• Features:
  • Screen size (measured diagonally).
  • Resolution (measured in pixels).
  • Energy efficiency features (e.g., screen savers, low power standby).

Printers

• Types:
  • Dot Matrix Printers (Impact Printers):
    • Prints by hitting paper through an ink ribbon.
    • Features: Slowest, cheap, low cost per copy, rare color printing, low quality.
  • Inkjet Printers:
    • Uses ink cartridges to print.
    • Features: Fast, medium cost, high cost per copy, color printing available, high quality.
  • Laser Printers:
    • Uses electric charge and toner to print.
    • Features: Fastest, expensive, medium cost per copy, color printing available, highest quality.
  • 3D Printers:
    • Creates models from digital designs by adding layers.
    • Time consuming.

Plotters

• Draws high-quality drawings from digital designs.
• Uses computer-aided design software.
• Uses a pen to move on paper to create designs.
• Used by designers, architects, engineers.

Data Projectors

• Used in home entertainment and school presentations.
• Features:
  • Light bulbs with various brightness levels.
  • Resolution quality varies.
  • Zoom functionality.
  • Portability varies (newer models are smaller and lighter).

Speakers

• Outputs sound.
• Often come in pairs for stereo or surround sound.
• Common in home entertainment systems.

Control Devices (Actuators)

• Make something happen in the real world.
• Considered mechanical.
• Examples: Valves, pistons, heaters, coolers, motors.