PDA (Personal Digital Assistant) is a small technological device that combines Computer, Telephone/Fax, Internet, and Network Connections. This technology is also called palmtop computers, handheld computers, and pocket computers.
PDA (Personal Digital Assistant)
A typical PDA can function as a cell phone, fax, Internet browser, personal calendar, or GPS. These devices were later used with a stylus instead of a keyboard, and handwriting recognition was also added.
PDAs can have keyboard and handwriting recognition, or even respond to speech using speech recognition technologies.
Features and Hardware
A PDA has at least one touch screen to enter information, a memory card for data storage, and wireless connectivity hardware such as infrared, Bluetooth, or WiFi.
In addition, the required software includes the calendar application, a contact book, and some programs for adding notes. It also has support for Internet browsing and Emails receiving and sending.
PDAs usually have a touchscreen for navigation technology.
Many PDA devices such as the Apple Newton and Palm Pilot have touch screens to interact with the user. So it has very few buttons to run the most used programs.
Devices with this screen usually have a removable pen that allows all tasks to be done.
Typically the virtual keyboard is used to add text and you have to touch each one or an external keyboard connected via USB or Bluetooth can be connected.
With the letter, word, and symbol recognition feature, a faster note can be written.
PDAs designed for commercial use, such as BlackBerry, have keyboards and additional keys to facilitate data entry instead of a touchscreen.
There are also newer PDAs such as the iPhone or iPod Touch that use a technology called multi-touch.
Although some PDAs do not use a memory card, most of them today allow the insertion of SD cards. Also, a few of them have USB ports and also offer MiniSD or MicroSD cards.
Although some older devices were connected to the PC using a serial cable, today they usually use a USB cable.
It connects with the computer using a USB cable and acts as a power port for electrical current.
Since most modern PDAs have Bluetooth connectivity, it allows you to connect external keyboards, headsets, GPS, and many more accessories.
In addition, you can easily connect to wireless networks and access the Internet, as some models have Wi-Fi connectivity.
Models that have an infrared port instead of Wi-Fi are much slower in data transfer.
Infrared allows you to connect between two PDAs or any other accessory that has one of these ports.
Most of today’s PDAs also feature 3G technology that allows Internet access in addition to the advanced cell phone functionality, a term better known as a smartphone.
One of the most important functions of PDAs is synchronization with personal computers. This provides a backup service by aligning information on the computer and on the PDA, allowing certain services or services to be updated.
Thanks to the synchronization technology, the loss of stored information are prevented in case the accessory is lost, stolen, or damaged.
Another advantage is that data can be entered and transferred to the device much faster than the computer.
Every time a PDA is attached to the user’s computer, the data created on both is synchronized. Thus, for example, the data of both devices are updated.
With this feature, you can edit your Word documents on the go and read them easily in any cafeteria.
PDA Operating Systems
These devices first used the Palm operating system and Microsoft Pocket PC system. Palm is cheaper and easier to use than Pocket PC.
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