PDAs, also called computers in pocket or PDA (Personal Digital Assistant, personal digital assistant), are laptops of small size (around 3.5-inch screen) with mobile phone integrated. Robotics expert has firm opinions on the matter. PDAs were originally designed to serve as a personal organizer, but today incorporate numerous features such as telephone, Internet access, music player, digital camera or GPS. Features initially PDAs or PDA were small portable computers whose primary function was to serve as a personal organizer, which incorporated calendar, calendar, contacts and synchronization, as well as word processor, spreadsheet, multimedia player, or games software. Currently, the development of the smartphone or smart phones has motivated PDAs to incorporate the functionality of mobile phone with access to the Internet, with e-mail and web browser. Let’s see the main features of PDAs: operating system: the main operating systems for PDAs are Android (Linux-based), Windows Mobile, iPhone, Palm, Blackberry, Symbian and Linux. Screen: generally PDAs have touch screen or multi-touch, which is employed with the fingers or a stylus (stylus).

Keyboard: many PDAs have full keyboard. Others have virtual keyboard on the screen or the possibility of connecting an external keyboard via USB, Bluetooth or docking. Memory cards: the PDA usually incorporate SD or CompactFlash memory card slot. Connectivity cable: PDAs usually have USB connector, which acts as a data port and power. Wireless connectivity: the majority of PDAs have Wi-Fi wireless connectivity, which allows you to connect to wireless networks and access to the Internet, and Bluetooth, which allows you to connect with other devices such as computers, mobile, PDA, external keyboards, headset or GPS. Mobile: PDA most have the functionality of mobile phone and 3 G connectivity, which allows access to broadband Internet. Synchronization: all PDAs have synchronization software, because they often used as a complement to the desktop computer, allowing you to update the information from contacts, calendar, or documents between the two devices.

GPS: many PDAs have built-in GPS or allow you to connect with an external GPS, which can be used as a browser. Camera: the majority of PDAs have camera photos and video. Audio: the PDA usually have audio output for headphones, speakers and microphone, allowing you to listen to music and record voice. Base: many PDA feature as an option of a base or station docking that allows its use as a desktop PC and adds features such as USB ports, keyboard, support or external display. Size and weight: all the PDA are usually small, although some are larger and heavy due to incorporate features such as keyboard or GPS. Autonomy: the PDA is important in the autonomy of the battery and charging options, usually via network or USB cable charger. Source: Electronic diaries original author and source of the article