PDA Specifications and Functions
Processor and Memory
The processor and memory of your PDA will affect how quickly it runs, and also how many programs you can install and run on it.
The processor is the brain of the PDA; the faster it is the more complex programs you can run. But better processors will add to the cost of your PDA and will also lower battery life.
If you are planning to use your PDA for basic software and email, you do not need to go for a top of the range processor; although it is still advisable to avoid the bottom of the range option.
The memory (RAM) of your PDA affects how many programs you can use. The more memory you have the more space you have for storing programs and files. If you plan to use a number of programs or have large spreadsheets and presentations to run, then going for a larger RAM model is strongly advisable.
A very small number of PDA’s now come with a mini hard drive, providing a massive amount of data storage. One Palm model has 4Gb/4000MB storage (as opposed to the 64-256Mb typical RAM storage). The new range of hard drive PDA’s are more expensive and there are currently very few models available; but if you need a massive amount of storage for your PDA there are few better options.
Memory Expansion
Almost all PDA’s now come with an expansion slot that allows you to increase your storage space using ‘flash’ memory cards. The most common types of card are SD (Secure Digital) and CF (Compact Flash), these allow you much more space for a relatively tiny price. For anything other than the most basic of use, a PDA with a memory expansion slot is essential.
Communication
If you wish to use your PDA as a mobile office tool, it is important that you pick a model that offers good connectivity with your existing computer setup. There are several methods you can use to communicate with your computers and other people:
GPRS
GPRS is a form of wireless internet access used by many mobile phones. It is much quicker than the old WAP access, but is much slower than 3G or standard computer internet connections.
You may need a phone enabled PDA or Smartphone to be able to use GPRS, as it is primarily used by mobile phones. With GPRS, you pay a set amount per unit of data downloaded.
Wi-Fi
PDA’s with Wi-Fi compatibility are especially useful if you need to access the internet on the move. If you have a wireless network in your office, a Wi-Fi enabled PDA will be able to freely use the existing connection to access the internet and transfer files.
You will also be able to use a PDA with Wi-Fi at one of the many thousands of ‘hotspots’ across the country. These include certain trains, café’s, restaurants, hotels and other locations; a growing number allow free access to customers to help encourage sales.
Wi-Fi is common on newer PDA’s, but not all yet have it; however, you can now buy Wi-Fi adaptors for certain PDA’s that fit in the SD memory card slot. If you have a Wi-Fi network in your office then the advantages of having a compatible PDA are well worth the extra cost.
Bluetooth
Bluetooth is a form of wireless connection that is commonly used in mobile phones. It does not usually allow internet access, and is used primarily in PDA’s to allow easier transfer of files to and from a computer. A large number of PDA’s include Bluetooth connectivity; it is useful if you cannot connect your PDA by Wi-Fi.
Unless the PDA comes with one; you will need to purchase a Bluetooth adaptor to allow your PC to communicate with it.
Cables
Many PDA’s still allow you to connect to a computer by cable; you simply plug the two systems together. This is a cheap and quick option; it does however limit you to being next to the computer.
Expansion Card
If the PDA has space for a memory expansion card (Mostly SD or CF card) then you can use the card to transfer files between the PDA and a computer. You simply remove the expansion card from the PDA and place it into a card reader connected to your computer. The card readers cost from as little as £7-8, and will usually read a variety of card formats
This method of communication is limited as it will not allow you connect directly or share an internet connection; it is however a useful way to move files when you cannot connect any other way.
Phone Functions
If you wish for your PDA to have phone functions, then you need either a phone enabled PDA or a Smartphone. Smartphones combine PDA functions with a mobile phone, and are especially useful if you need to make calls while away from the office without carrying two or three devices.
Some Smartphones have limited PDA features, so you need to look carefully at which one you buy to make sure it does everything you need it to.
For email use, you need to make sure that your PDA is compatible; you will need either GPRS or phone functions to be able to do so. Smartphones are generally designed for email use; so if email is a key part of your needs, you should look at them or phone enabled PDA’s (e.g. Palm Treo series and a number of Pocket PC phones) first.
Article Index
- Choosing the Right PDA (Personal Digital Assistant)
- Specifications and Functions
- PDA Screens and Image Quality
- PDA Input Options and Battery Life
- Related Articles
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