iPAQ presently refers to the Pocket PC and personal digital assistant first unveiled by Compaq in April 2000; the title was borrowed from either Compaq's earliest iPAQ Desktop Personal Computers. Since Hewlett Packard's acquisition of Compaq, the product has been marketed by HP. A device is the independent competition to the Palm, but will bring other multimedia system capabilities & a familiar Microsoft Windows interface. Higher prevent units were super modular, with "sleeve" accessories which would slide around the unit & add functionality rather a card reader, wireless networking, GPS, & possibly more batteries. Which are actually technically known as jackets.

Note: PDAs branded "Pocket PC" do a proprietary Microsoft Pocket PC (Windows Mobile) OS. HPCs and HPC Pros begin earliest versions of the OS, viz. Windows CE.

Newest revision
Inside February 2005 HP introduced a iPAQ Upwardly mobile Messenger h6500 series to selected media at a 3GSM conference inside Cannes, France. A article has been updated to reflect this. Inside August 2004, HP announced a h63xx series of Pocket PC Phone Editions, a hx47xx high prevent model, & a 17xx budget prevent. Within June 2003, HP announced the future line of iPAQ's, & sent the h3xxx series to pension, nowadays there is the h1xxx budget line, a h2xxx consumer line, & a h5xxx agent line. These is sold by using Pocket PC 2003 when standard. When of February 2005 a latest model purchasable at retail is the hx2000 series. Aimed at a Enterprise it sports features introduced integral the iPAQ h5000 series like built-in Biometric fingerprint reader. At the top of this series is the hx2700 sustaining a 624MHz Intel PXA270 processor, 256 MB number memory (128 MB ROM & 128 MB SDRAM); As much as 185 MB user available memory (includes Lxxx MB iPAQ File Store), Wi-Fi (802.11b), Bluetooth® wireless technology and Windows Wandering for Pocket PC 2003 2nd Edition Premium Edition.

Model variations
Compaq iPAQ H3600 series
Compaq's flagship iPAQs were people of the 3600 system. Originally going a Microsoft Windows for Pocket PC 2000 OS, these equipment featured Xii-bit colour displays, 64MB of RAM, & 16MB ROM.

System in the 3600 series come:

3630, 3635, 3650 - which are then monovular system by using 16M ROM & 32M RAM sold via different marketing trend lines. a 3635 was accompanied by a CF expansion sleeve that was sold one by one using the more Deuce.

3670 - a 64M RAM version that experienced the older bezel of the 3600 series instead of the newly 3700 system it otherwise resembles.

PPC2002 OS update is available, however a little rom takes a bit of package like a media streaming video player to set up within volatile ram instead of the rom when in the former OS ppc2000.

When utilized units at moo price, it is the great way to inexpensively make their way began by owning a PDA.

Compaq iPAQ H3100 series
Discharged shortly when a 3600 series as a prices-good model for victims non requiring colour screens. Gratuitous to say, its profits was limited...

Compaq iPAQ H3700 series
These hardware got a accurate equivalent form factor when their 3600 model predecessors, even so, it got an increased ROM size & ran a PPC2002 OS natively.

Compaq iPAQ H3800 series
Compaq's original high-prevent series system. These units were as well a foremost to include Sixteen-bit screens, incoporated an SD card reader & a greatest RAM capacity of any Pocket PC. It were too a foremost to offer integrated Bluetooth, in take system.

Compaq iPAQ 3900 series
A evolution of a 3800 series, a 3900 wwhen a number 1 series to run applying transreflective displays for clearer picture, besides as the introduction of the XScale processors. Late system introduced Bluetooth & the consumer IR sustaining remote software program. HP iPAQ H1900 series
When HP's acquisition of Compaq, a 1900 series was a guide to Palm's budget units. Adoptive the little, slenderize frame making it further competitory within terms of portability. Independent memory size was 64 MB, big than totally more budget units. Ran PPC2002 (1910 just) or even 2003. Introduction of obliterable batteries, leave a user to steal more batteries & barter when necessary. Unlike older iPAQs, several existent iPAQ accessories were incompatible or even unsupported due to its budget nature and severity.

HP iPAQ H5400 series
Introduced when the next generation of a iPAQ corporate line fallowing the 3900 series, adding Wi-Fi trend lines, improved Bluetooth & a biometric market scanner. Even so, a 5400 was plagued by owning numbers of bugs, though virtually all were corrected though microcode upgrades.

HP iPAQ 5500 series
a disciplined versiin of the 5400 series using double the RAM (128 MB) running off on PPC2003. HP iPAQ H5100 series
a cutdown version of the 5500 series, loses Wi-Fi support and the more RAM (single 64 MB). HP iPAQ H2200 series
Targeting a general consumer/prosumer, a 2200 series is about equally when capable when their corporate counterparts (less RAM, there are there are no integrated Wi-Fi, no biometric market scanner). Independent memory size was 64 MB RAM, PPC2003, better trend lines for iPAQ accessories than a 1900 series though however there are no iPAQ expansion "sleeve" trend lines. Bluetooth, SD card & CompactFlash card trend lines built-constitutional.

HP iPAQ H4300 series
Similar to the 2200 series within terms of features, a 4300 series targets the corporate audience by with a husky battery & integrated Wi-Fi additionally to Bluetooth. There is no CompactFlash reader, however does have a SD-card & SDIO slot. a thumb keyboard is integrated into the device.

HP iPAQ H4100 series
Basically a corporate version of the 1900 series by owning numerous of the functionalities that were stripped from either dollars and cents unit. Too adds WiFi & SDIO. Nearer to the 4300-series internally.

This occurs as peachy convienence for even the roving technician or professional worker.

HP iPAQ hx4700 series
A high prevent corporate edition to replenish a 5500 series. Atomic number 12 alloy shell, VGA screen, Wi-Fi, Bluetooth One.Two, SecureDigital, & Compact Flash player by using the 624 MHz processor, running off Windows Wandering 2003 2nd Edition.

ROM: 128MB RAM: 64MB 1800mAh battery, obliterable. 3600mAh battery optional. Built inside (obliterable) screen handle. Innovative touchpad by owning Two modes. Little known fact: Phone adapter accepts 55xx series Quaternary pin plugs (mike input)

Built within encoding computer software involved.

HP iPAQ rz1700 series
A fresh budget handheld from either HP diarrhea Windows Free to roam 2003 2nd Edition, by owning there is no wireless alternatives & exclusively 32 MB of RAM.

HP iPAQ rx3100, rx3400 and rx3700 series
Billed when "Mobile Media Companions", these system feature Nevo family media software program, onboard I.Deuce megapixel cameras (rx3400 & rx3700), Bluetooth, Wi-Fi & an onboard Secure Digital Card slot. A lot of the babies do Windows Free to wander 2003 2nd Editiin on Samsung ARM processors.

the rx3100 & rx3400 experienced 32MB of RAM & 300MHz processors, whereas a rx3700 experienced 64MB of RAM & a 400MHz processor. a latter when well come sustaining a 1440mAh battery as standard, like than the rx3400's 920mAh unit.

HP iPAQ h6300 series
Pocket PC Phone. Contains the GSM phone, 64 MB RAM, 168 MHz Texas Instruments OMAP processor, and comes sustaining the detachable thumb keyboard. Besides includes VGA quality camera & 1800 mAh battery. It has built within Bluetooth & Wi-Fi (802.11b).

T-Mobile used to sell a h6315 however keep around decided to withdraw it from either the market.

Variants include the h6340 which is sold inside area of Europe while forgoing a camera across gaussian distribution points- hence is non host specific. the h6365 has monovular specifications to the h6315 however these are non signed to a host.

HP iPAQ Mobile Messenger h6500 series
This iPAQ poronotus triacanthus for launch in the 2nd-half of April 2005. These are a foremost Pocket PC phone to keep close at hand built around Spherical Positioning Rules (GPS) capabilities by using trend lines for NMEA. While there is no GPS signal is available a device tries to calculate its location by shift to cell triangulation. In which Three cells come utilized to cogitate its position. It has an integrated keyboard & unique 240x240 guide.

It has deuce card slots SD SDIO & mini-SD & rather its predecessor a h6300 there is deuce versions by having camera & 1 while forgoing. Bluetooth capability is built within & may probably apply a I.Deuce (However this is educated postulation). It may utilise a GSM/GPRS standard by having EDGE capabilities. More specifications come unknown at this point until these are officially announced by Hewlett-Packard Company.

Alternative Operating Systems for the iPAQ

Familiar Linux

An guide OS that of these can apply occurs as Linux distribution known as Familiar, a Linux kernel forswearing a front-prevent, to which can bind the Opie and GPE Palmtop Environment GUIs. A v0.Eighter.Ii (2005-04-13) version of Familiar has trend lines for a wholly 3xxx line (including the 39xx), & 5xxx trend lines en route. Operate is likewise under way in trend lines for the 19xx & 4700 series.

Additionally, a One.Ii.Nought Version of Opie will bring a GUI for Familiar, & its i18n has been translated into Xv languages.

Plan 9

Plan 9 runs on the iPAQ. A nickname of the architecture is "bitsy".