The term "personal digital assistant" was introduced in 1992 at the Electronics show in Las Vegas.
PDA operating systems include Windows Mobile, Palm OS, BlackBerry, Symbian OS and others. Gartner market study shows that the market sales for PDAs declined by 5% in 2004 as compared with 2003. The main reason for this decline is the appearance and improvement of mobile phones, which have now immense capabilities.
Among the PDAs rating highest are BlackBerry, Apple Computer Newton, Palm Pilot, Sharp Wizard and Zaurus, AlphaSmart Dana, Dell Axim and Tapewave Zodiac.
In order to protect your investment you must have a PDA case. If you want a really good PDA case, you may look at the Nutshell. You can choose among wide variety of cases available here. PDA case purchased at the Nutshell is considered to be a real masterpiece. First of all it is hand-sewn out of a single piece of leather. Besides, you can choose the color of your PDA case from the variety of such at the Nutshell. One more positive thing about the Nutshell cases is that they are able to close with a CF Wireless card on the PDA's place. So if you need a beautiful and functional PDA case, the Nutshell can provide you with such.
The iHolster offers cases designed for iPAQ and the Dell Axim. These cases are designed in a way that makes your PDA quickly accessible from your belt. Saunders RhinoSkin is one more company, which offers a wide range of PDA cases. It makes itself conspicuous among other companies due to its line of aluminum hardcases.
Some companies offer the PDA Plus case. Such case has a lot of room; it is designed in such a way that you can use the PDA without removing it from your belt. Moreover, there is enough room to keep your credit cards. The style and functionality of the case makes it popular among many PDA users.
Otterbox Armor cases are designed to protect your PDA in extreme circumstances. They are suitable for landscapers, construction workers or boaters. Otterbox 1900 has a large number of benefits: it is waterproof, drop-proof and crushproof, it has a flexible screen membrane and quick access to SD and SF slots.
However, it is designed for small PDA. If your PDA is larger the Armor 3600 will suit you perfectly. It allows looking at the PDA without lifting the cover. The other positive thing about it is that you can replace membrane with an outfit from Otterbox. But the main advantage is of course that you don't need to remove the PDA from such case. Among other prominent companies producing PDA cases are Sena, DSI, Bellagio and others.
PDA stylus pen is a convenient tool for businesspeople, especially if they hate carrying multiple devices. It looks like a regular ink pen, but is also equipped with laser pointer. Duo stylus pen includes a metal case with extra set of batteries and is presented now in satin alloy color.
According to the Healthcare Information and Management Systems Society, PDAs are now used by nearly 35 percent of all health care workers. In order to allow them switch between paper documents and PDA more efficiently a hybrid stylus pen was designed, which contains ink for use on paper.