PC Hardware

Lesson Summary

The following points summarize the main elements of this lesson:

  • The three benefits provided by a network are connections, communications, and services.

  • The three primary network topologies are bus, ring, and star.

  • Network interface cards (NICs) provide the connection between the computer and the network cabling.

  • The three network cabling types are twisted-pair, coaxial, and fiber-optic.

  • Network cabling is designated by transmission speed, length, or type.

  • Network protocols provide the rules for network communications.

  • Networks can be extended with repeaters, bridges, routers, and gateways.

  • The Internet is a valuable informational tool for an A+ Technician.

Lesson 2: Portable Computers

Portable computers, once a novelty, are now a part of everyday business life. Portable computers work and act just like the big ones except they are very compact. In this lesson, we look at those elements that make a portable computer unique.

After this lesson, you will be able to:
  • Distinguish between the different categories of portable computers.

  • Identify the unique components of portable systems.

  • Define the unique problems of portable systems.

  • Distinguish between the different types of computer cards designed for portable computers.

Estimated lesson time: 20 minutes

The category of portable computers includes laptop, notebook, and subnotebook (palmtop) computers, as well as the newest categories: PDA (personal digital assistant) and handheld computers.