Personal digital assistant

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(Redirected from Personal Digital Assistant)
Palm IIIxe PDA
Palm IIIxe PDA

Personal digital assistants (PDAs or palmtops) are handheld devices that were originally designed as personal organizers, but became much more versatile over the years. A basic PDA usually includes a clock, date book, address book, task list, memo pad and a simple calculator. One major advantage of using PDAs is their ability to synchronize data with desktop, notebook and desknote computers.



The term "personal digital assistant" was coined on 7 January 1992 by John Sculley at the Consumer Electronics Show in Las Vegas, Nevada, referring to the Apple Newton. Earlier devices like the Psion and Sharp Wizard have the functionality to be considered PDAs, however.

The currently major PDA operating systems are:

Many PDAs run using a variation of the ARM architecture (usually denoted by the Intel Xscale trademark). This encompasses a class of RISC microprocessors that are widely used in mobile devices and embedded systems, and its design was influenced strongly by a popular 1970s/1980s CPU, the MOS Technology 6502. In its classic instant-on, silent operation, restricted storage and space, and single-tasking UI approach, the PDA can be seen as a logical descendent of the low power consumption, compact, limited capacity home computer popular during the late 1970s and 1990s. This class of machines has been largely replaced by descendents of the IBM PC that generally feature long boot-up times, fast execution CPUs that require active, noisy cooling, and very large capacity hard drives that produce additional noise and heat.

According to a Gartner market study, the overall market for PDAs shrunk by 5% in the first quarter (Q1) of 2004, compared to Q1 2003, with marketshare resolving as follows (by operating system):

The reason usually cited for this decline is the growing capabilities of smartphonesmobile phones with PDA-like communication abilities.

Popular PDAs

palmOne Tungsten T5
palmOne Tungsten T5

Other uses

See also

External links

cs:PDA da:PDA de:PDA (Computer) es:PDA fr:Assistant personnel fi:Kmmentietokone it:Palmare ja:Personal Digital Assistant ko:PDA lt:Delninis kompiuteris nl:PDA no:PDA pl:Palmtop ru:Карманный персональный компьютер sv:Handdator zh:PDA


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