Standard PDA Features

Screen type

There are two primary screen types available: color and grayscale. Those planning to use a PDA for PowerPoint presentations, Web browsing, or viewing movies and pictures, may want to consider a color screen. These generally cost more than the grayscale versions.

Expandability

To expand their functionality, PDAs generally allow for the addition of separate hardware, including modems, wireless Ethernet cards, and memory. Some PDAs come with built-in expansion slots which allow the hardware to connect directly, while others require additional hardware such as customized expansion packs to connect. Additionally, be cautious when purchasing memory expansion cards and verify which types of cards the PDA supports. Among the different types available are CompactFlash (CF) cards (usually the least expensive), Multimedia (MMC) cards (usually the smallest), and Secure Digital (SD) cards (usually the fastest).

Battery

Currently, most PDAs come with a rechargeable battery that recharges when the PDA is connected to its cradle. In some cases, the rechargeable battery cannot be replaced by the user, so owners cannot keep a spare available. Additionally, if users experience battery problems, they couldn't change it without sending the entire PDA to the manufacturer.

Please also note that some PDAs can be damaged as a result of infrequent charging of the battery, which could lead to the battery dying and/or data loss. Whenever possible, avoid going several days without charging your PDA.

Size and weight

PDA sizes and weights are constantly changing. Currently, most PDAs weigh between 3 and 7 oz., and their height and width can range from 4 to 6 inches and 2 to 4 inches, respectively. The size of a PDA can increase significantly with the addition of hardware such as a modem or wireless card, particularly if the PDA requires a specialized expansion pack.