Personal
Digital Assistants
Personal
digital assistants (PDAs)
are handheld computers, but have become much more versatile over
the years. PDAs are
also known as pocket computers or palmtop
computers. PDAs have many uses: calculation,
use as a clock and calendar, accessing the Internet, sending
and receiving E-mails, video recording, typewriting and
word processing, use as an address book, making and writing on
spreadsheets, scanning bar codes, use as a radio or stereo, playing
computer games, recording survey responses, and Global Positioning
System (GPS). Newer
PDAs also have both color screens and audio capabilities,
enabling them to be used as mobile phones (smartphones),
web browsers, or portable media players. Many PDAs
can access the Internet, intranets or extranets via Wi-Fi,
or Wireless Wide-Area Networks (WWANs). Several PDA's
employ touch screen technology.
http://en.wikipedia.org/wiki/Personal_digital_assistant