Understanding Computer Peripherals

Overview of Peripherals

• Peripherals are external devices connected to a computer to add functionality.
• Common examples include a mouse, keyboard, and monitor.

USB Devices

• USB stands for Universal Serial Bus.
• Popular for connecting gadgets to computers.
• Types of USB versions commonly used:
  • USB 2.0
  • USB 3.0
  • USB 3.1

USB Transfer Speeds

• Mb/s (Megabit per second): Unit of data transfer rate.
• MB (Megabyte): Unit of data storage.
• Important distinction: 1 byte = 8 bits.
  • For example, a 1 MB file requires an 8 Mb/s connection to transfer in one second.

USB Compatibility

• USB ports are backward compatible.
  • USB 2.0 devices in USB 3.0 ports do not gain 3.0 speeds but can still connect.
• Color Differentiation of Ports
  • USB 2.0: Black
  • USB 3.0: Blue
  • USB 3.1: Teal
  • Note: Colors might vary by manufacturer.

USB Connectors

• Type-C Connector
  • Designed to replace multiple peripheral connections.
  • Becoming a universal standard for data and display transfer.

Display Peripherals

• DVI (Digital Visual Interface):

  • Primarily outputs video; lacks audio capabilities.
  • Not ideal for presentations requiring audio.

• HDMI (High-Definition Multimedia Interface):

  • Common in modern televisions and computers.
  • Supports both video and audio output.

• DisplayPort:

  • Outputs both audio and video.

• USB Type-C:

  • Capable of data transfer, video, audio, and power.

Practical Application

• As an IT Support Specialist, familiarity with USB and display devices is crucial.
• Ability to distinguish and correctly use different types of ports and connectors is essential.