To date, personal digital assistants (PDAs) are becoming very popular, both in the world, and in the former CIS countries. Every day, make models, all smaller in size and increasing its capabilities. Of course, and on other points – one better than another, just eyes run, and thousands of models and each has its own price. That is why in the selection of a PDA should not rush. First and foremost, we must decide: to what purpose you buy it? You need the GPS-navigator, or a regular telephone, a means for the Internet or read books, and probably the usual mp3-player? You may be more suitable for a laptop or a standard desktop computer? To begin with, that the 'Pocket PC' and as 'handheld' recently ceased to mean the same thing.

Y 'nalodonnika' there is no separate fully functional keypad and the joystick of course, and is controlled only by the touch screen and more immediate access keys. Keyboard mainly recommended for those who want to enter the PDA huge amounts of data, as many know that the print stylus is much more complicated than the two thumbs. Charles Schwab pursues this goal as well. Monochrome displays – the main difference between communicators baseline. In the other long ago used color LCD TFT-displays, today can display 262 144 colors, not only in the pocket computers, and also in mobile phones. With all this high resolution is not necessarily respond to the computer with huge dimensions – it can rise if the pixel size. The main thing to watch out for what platform based smartphone. Most popular today: Palm OS and Pocket PC. Difference as such they do not exist, the main difference – Palm OS is presented specifically for PDA and Pocket PC owners are usually used for desktop computer software from Microsoft.

For Pocket PC and Palm OS operating system is based on Microsoft Windows, OS Linux as well as other processors, too, there are different. But the undisputed leader, as well as a PC, a corporation Intel. Clock frequency in megahertz, 200-300 is acceptable for low-end PDAs and totally obscured by the existing PXA 27x Dell Axim X30 with a strip of 624 MHz. For most users, the storage capacity is the main criterion when choosing a Pocket PC. Memory, as well as a desktop computers is operational (from 2 to 256 Mb), which is designed for instant access to information, and the constant (from 2 MB to 4 GB), is the main place to store information. It is also very important its extensibility – Modern PDAs have the ability to use additional memory cards (from 8 megabytes to several gigabytes), which makes the memory a lot more. The battery is also not the most important role. Ni-Cd and Ni-MH are the most inexpensive and have many shortcomings. Li-Pol and Li-Ion Lithium batteries other than having a great life and safety in use. Many popular communicators have a Bluetooth-adapter, IrDA for wireless communication information, WiFi, GSM, GPRS, EDGE, 3G-ins, USB-port, GPS-receiver, built-in speakers, TV tuner, photo and video camera is usually a modest increase (0.3:5 megapixels) and many other additional features.