2 major versions of Palm OS come presently under development: Palm OS Garnet (Five.x), & Palm OS Cobalt (Six.x). A list were introduced inside February 2004 around an attempt to produce it clear that Pentad.10 development would non prevent patch Sixer.ten development was on-going[http://www.eweek.com/article2/0,1759,1523110,00.asp]. When of August 2005, completely equipment have Palm OS Garnet. In all probability following of Palm OS Cobalt's want of adoption, PalmSource has shifted to getting Palm OS Cobalt's APIs in top of the Linux kernel.

History

Palm OS was originally developed by Jeff Hawkins for use on the original Pilot PDA by US Robotics. Version One.Cypher was present on the original Pilot 1000 & 5000 & version Deuce.Zero was introduced by using a PalmPilot Personalized & Broker.

By owning a launch of the Palm III series version Trey.Cipher of the OS was introduced. Incremental upgrades occurred by having a release of versions Trine.Single, Threesome.Three & Three.V, adding trend lines for color, multiple expansion ports, newly processors & more various additions.

Version Four.Cipher was freed using a m500 series, & late manufactured available as an update for older equipment. This added the standard interface for external FS access (like SD cards) & improved telephone libraries, security & UI improvements.

Version Five.Zero was introduced by having a Tungsten T and was the foremost version freed to trend lines ARM devices. Described as a stepping stone to to a full ARM trend lines, Palm apps come rerun within an emulated environment known as the Palm Application Compatibility Environment (PACE), allowing neat compatibility using old software. Potentially by owning a extra overhead of PACE, Palm applications normally redo sooner in ARM equipment than in former generation devices. Fresh software package could choose benefit of the ARM processors by owning PNO (PACE Native objects), little units of ARM code. It was likewise about this instance while Palm began to separate its devices & OS efforts, yet becoming ii corporations, PalmSource, Inc. (OS) and Palm, Inc. (formerly palmOne) (hardware). Farther releases of Palm OS Five keep around seen the standardised API for hi-res & moral force input areas, along by having the total of extra minor improvements.

Palm OS Five.Two & Four.Unity.Deuce (& late) as well feature Graffiti 2. This is according to Jot by CIC.

PalmSource, Inc. released Palm OS 6 in 2003. It allows ARM native applications along with improved multimedia system trend lines. Inside February 2004, PalmSource introduced list for the Palm OS families: Palm OS Five became Palm OS Garnet, & Palm OS 6 became Palm OS Cobalt. Palm OS Cobalt 6.One an upgrade to Atomic number 27 was freed to inside September 2004. the freshly OS features extended trend lines for a kind of LCD panel results, redesigned teleph1 components, one-handed navigation & extensive utilize of scalable fonts throughout applications. When of August 2005, there are no devices products rerun Palm OS Cobalt.

Inside late 2004, PalmSource announced that new versions of the Palm OS might trend lines heading in top of the Linux kernel. At first, PalmSource said this would become additionally to the customized kernel[http://www.palmsource.com/about/cms_faq.html], however around July 2005 revealed that development of all more products got been delayed[http://www.palminfocenter.com/view_story.asp?ID=7946].

Inside Might 2005 at a PalmSource 2005 creator conference, it was announced that PalmOne got acquired to the full rights to the Palm marque. For the period of quaternion years, PalmOne might grant certain rights to Palm trademarks to PalmSource & licencee.

Around September 2005, PalmSource announced that it was existence acquired by ACCESS[http://www.palmsource.com/press/2005/090905_access.html].

Built-in applications for Palm OS

Palm OS licencee decides which applications come involved in their Palm OS gear. Licencee can likewise customize a applications. Beneath come occasionally of a usual PalmSource applications involved sustaining the Palm OS:

Address Book/Contacts
A Palm's Location program places personalized facts, keyed by any of many user-definable categories. Entries come displayed & sorted around surtitle, number 1 Title sequentially (this may be changed just to Company, Go Name sequentially). There are 5 slots for even even phone or e-electronic electronic mail, every of which can become intended Operate, Personal, Fax, More, E-mail, Main, Pager or Free to wander (a slot designations just can't be changed).

Starting by having a OS version Quint.Ii.Unity (which was freed in the Tungsten T3, Tungsten E, Zire 72), PalmOne, Inc. discharged the custom-made version of this application, known as Contacts.

Calculator
Calc turns the Palm into a standard Four-work pocket calculator using three shades of purple & blue buttons contrastive with them red clear buttons. It sports square root & pct keys & has of these memory.

It too has an stock to display a heading history of the calculations, great deal such as the paper-tape calculators that were another time most common.

Starting within Palm OS v. Phoebe.Quaternion Garnet, the calculator has a menu stock to switch to an advanced mode, which features many button layouts that pertain to specific jobs. These modes include: Mathematics, Trigonometry, Finance, Logic, Savings comparisons, Weight/Tmp, Length, Metropolitan area, & Volume.

Date Book/Calendar
Date Book shows the daily or even even every week schedule, or the elementary every month learn from. A day-after-day schedule has a single line by the hour, between user-selected commence & prevent days. Clicking in an empty line creates the newly appointment. Empty lines come crowded out by actual appointments, whose begin & prevent days come shown by default bracketed in the left margin.

An appointment may be heralded by an alarm, any total of minutes, hours or even times prior to it begins. These alarms healthy potentially whilst a unit is switched off.

Appointments could recur around the specified total of times, weeks, months or even years -- & might contain notes.

Starting by using a OS version Quintet.Deuce.Single (which was freed in the Wolfram T3, Tungsten E, Zire 72), Palm Inc. released their own version of this application, called Calendar. It allows categorisatiin of cases, likewise when featuring the summary screen similar thereto witnessed on Windows Free to roam gear.

Expense

the Expense application allows a user to track most common trade expense. There is no numbers come estimated on the Palm. the user must sync by owning a persons computer & look at the expense information inside a worksheet (guide for Microsoft Excel come supplied). NOTE: Does'nt involved in tons Palm OS hardware.

HotSync

A HotSync application will bring integration by having a user's PC. Commonly activated by the click of the physical HotSync button on the Palm's cradle (a dock station), this application communicates by using various conduits on the desktop PC to set up software system, backup databases, or even even merge changes processed on the PC or the handheld to each hardware.

Additionally to the conduits provided per licencee, developers could produce their have conduits for integration by owning more Palm OS applications & desktop products. For instance, the instance tracking pack may provide the conduit to communicate facts between Palm OS & Windows executables.

the Backhigher conduit involved by having the HotSync software system backs up (& restores, whenever necessary) virtually all of the informatiin on a Palm OS device. This allows users to firm reset their Palm -- so, clearing everthing of the information -- sustaining couple noticeable results. This too allows users to migrate to freshly Palm gear of the equivalent Palm OS version, the feature that is helpful to people world health organization lose or even damage their device.

A few system of Palm keep their information storage inside volatile memory and require constant power to maintain their memory. Although these handhelds attempt to save a contents of memory inside sale battery situations by non "turning on," allowing the "dead" handheld for a long period potty induce this reserve power to become utilized higher & a contents of storage memory to become misplaced. A few late Palms utilize NVRAM or microdrive for storage.

Memo Pad/Memos
A Memoranda Pad may hang on to notes of as much as 4,000 characters, keyed to user-configurable categories. Memorandum come ordered doubly: alphabetically, & manually (which allows a user to buy a the correct sequence of the memorandum). Memoranda Pad is for text, non for drawings. For this cause, text inside Memoranda Pad must exist as entered using the Graffiti alphabet.

Starting by having a OS version Pentad.Deuce.One (which was freed in the W T3, Tungsten E, Zire 72), PalmOne, Inc. released their own version of this application, called Memos, and the limit has been increased to 32Kb.

Note Pad
Drawings enter Note Pad. Smart shoppers could squeeze as much as Tenner words by the site, in case your computers writing is great. Otherwise, it's better to put text within Memorandum Pad. There are tierce sizes of drawing wax crayon, + an eraser & the background color vary feature. It's imaginable to draw the super elementary map.

Note Pad appeared in virtually all Palm OS PDAs starting using Palm OS Four.Cypher; certain PDAs by owning former versions of Palm OS did non include this application.

To Do List/Tasks
As well known as Task list.
This occurs as ready to h& place to produce personalized reminders and prioritize a items professional people keep around to launder.
Every To Run Listings item will likewise st&: the priority, categories (to organize & review things around logical groups), connected Note (to add other description and clarification of the project).
To Clean Listings item may be sorted by: due date, priority or even category.

Starting by using a OS version Fivesome.Two.Unity (which was freed in the Wolfram T3, Tungsten E, Zire 72) PalmOne, Inc. released their own version of this application, called Tasks, in which alarms may be assigned to tasks, and can be made to repeat.

Third-party applications
There are several successful applications that may be installed in the Palm OS device. When of August 2005, there are to a higher degree 20,000 third-person applications available for the Palm OS platform, which stand various licensing types, including open-source, freeware, shareware, and traditional commercial applications.

Application development

Palm OS Garnet applications come primarily coded inside C/C++. 2 compilers survive: the commercial product, Metrowerks CodeWarrior Development Studio for Palm OS, and an open source thing chain known as prc-information, according to an old version of gcc. CodeWarrior is criticized for existence expensive & is no hanker existence developed, whereas PRC-Information is lacking several many of CodeWarrior's features. The version of PRC-Information is involved within Palm OS Creator Suite.

Palm OS Co applications come likewise coded inside a variation of gcc, however the Cobalt compilers own fewer limitations.

Higher level development information come besides available.

Screen Resolution and Color Support
Multiple results come as well supported. A original Pilot 1000 utilized 160x160 picture element. A foremost colour device was a Palm IIIc introduced by Palm, Inc inside 2000, supporting 256 colors. HandErthe followed higher witharound 2001 by owning a HandEra 330 which displayed 240x320 in black & white featuring a virtual graffito region. Samsung introduced around a equivalent month the 1st screen supporting 160x240 picture element in color by owning its i300 smartphone. Sony too in a equivalent season introduced a N710C which pushed guide to 320x320 (Hi-res) fully color & in the as a consequence month introduced the NR70V which supported 320x480 (Hires+).

When of 2005, Palm hi-res is unremarkably 320x320 (by using the silk screen print Graffito vicinity) or even 320x480 picture element (by owning the collapsable virtual Graffito front yard). 320x320 equipment include a Tapwave Zodiac, Zodiac 2 & Sony's Clie series. 320x480 gear include a Tungsten T3, Tungsten T5, Palm Life Drive & TX. Presently Palm OS supports 160x160, 160x240, 240x240, 240x320, 320x320, 320x480 & about any combinatiin inside between within each monochromous & colour on existent gear, spell 640x480, 640x640, 640x960 come supported by Palm OS Cobalt (Sise.One) but nin however available on any equipment existence sold.

Legal Issues

Palm OS has been exposed inside various case on top a years.

Xerox vs. Palm Computing (1997) Inside 1997, Xerox was granted the patent (5,596,656) in "unistroke." It filed lawsuit against Palm (so U.S. Robotics), alleging that Graffito infringed on this patent. A Palm OS switch from either Graffiti 1 to Graffiti Two was triggered by Palm losing this lawsuit to Xerox. A patent was overturned within Could 2004 due to prior art[http://www.computerweekly.com/Article130845.htm].

Pilot Pen Corporation vs. Palm Computing (1998) A original title for Palm OS handhelds was Pilot. Nevertheless, the causthe from either Pilot Pen Corporation forced a title vary to PalmPilot, so one of these days to Palm.

Palm vs. Microsoft (1998) Within 1998, Microsoft planned to title a next version of their handheld computing platform Palm PC. Palm filed lawsuit against Microsoft, forcing a title vary to Pocket PC.

E-Pass Technologies vs. Palm, Microsoft & HP (2000) Around 2000, E-Pass Technologies filed lawsuit against Palm, alleging that its handhelds infringed in the E-Pass's patent (#5,276,311) for the multi-work, charge card-sized computer that allows users to securely store account statistics, PIN codes, etc. This causa is however on-going.

NCR vs. Handspring & Palm (2001) Within 1987, NCR was granted the patent for the personal e-commerce terminal. Around 2001, NCR sued Handspring & Palm. This outbreak was ruled forgoing merit inside 2002, the guide that was upheld in appeal.

'RIM vs. Handspring (2002) In 2002, Research In Motion (makers of the BlackBerry), sued Handspring. By year end, both Handspring and Palm licensed the patents and the suit was dropped.

Peer-to-Peer Systems vs. Palm (2002) Also in 2002, Peer-to-Peer systems filed lawsuit against Palm that alleges Palm infringed on its patent for wireless gaming. This lawsuit has been settled as of Feb 9th 2005.

Forgent Networks vs. HP, Toshiba, palmOne, etc., etc. (2004) Starting in 2002, Forgent Networks began offering licenses for a patent that encumbers JPEG. In 2004, it filed suit against various companies, including palmOne. This lawsuit is still ongoing.