Laptops and Portable Devices

This section is not covered in Exam 220–603.

Laptops are portable computers that use less power and make less noise than ordinary desktops. They are a little more expensive than desktops but have become very popular due to sharply falling prices. They have limited processing and graphics capabilities compared to desktops. They can work on AC power as well as DC power supplied through a built-in battery pack that runs for a few hours depending on what applications are running, what devices are connected, and how the laptop is configured to conserve power. Laptop components produce very small amounts of heat. This section discusses some fundamentals of laptops as well as installation and troubleshooting methods for components such as power devices, external monitors, and keypads.

Fundamental Principles

In this section, we will focus our attention on communication technologies for wireless communications, power devices for laptops, and components of the LCD.

Communication technologies for laptops

Laptops can be connected to a corporate network or to the Internet using wired or a wireless solution. In this section, we will take a brief look at how laptops can use different network communication methods.


Bluetooth wireless networking technology provides short-range communications between two or more laptop and desktop computers. It is designed to overcome the limitations of IrDA technology. It supports transmission speeds from 1 Mbps (Bluetooth 1.0) to ...

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