PDAs & Pocket PCs
A Pocket PC, abbreviated P/PC or PPC, is a hardware specification for a handheld-sized computer (Personal digital assistant) that runs the Windows Mobile operating system. It may have the capability to run an alternative operating system like NetBSD or Linux. more...
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It has many of the capabilities of modern desktop PCs.
Currently there are thousands of applications for handhelds adhering to the Microsoft Pocket PC specification, many of which are freeware. Some of these devices also include mobile phone features. Microsoft compliant Pocket PCs can also be used with many other add-ons like GPS receivers, barcode readers, RFID readers, and cameras.
Definition
According to Microsoft, the Pocket PC is "a handheld device that enables users to store and retrieve e-mail, contacts, appointments, tasks, play multimedia files, games, exchange text messages with Windows Live Messenger (Formally known as MSN Messenger), browse the Web, and more." (src: microsoft buyersguide)
From a technical standpoint, "Pocket PC" is a Microsoft specification that sets various hardware and software requirements for mobile devices bearing the "Pocket PC" label.
For instance, any device which is to be classified as a Pocket PC must:
Run Microsoft's Windows Mobile, PocketPC edition;
Come bundled with a specific suite of applications in ROM;
- Note: the name Windows Mobile includes both the Windows CE operating system and a suite of basic applications along with a specified user interface
Include a touchscreen;
Include a directional pad or touchpad;
Include a set of hardware application buttons;
Be based on an ARM version 4 compatible CPU, Intel XScale CPU, MIPS CPU or SH3 CPU. (As of the Pocket PC 2002 specification, ARM-based CPUs are required.);
Operating System Versions
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Microsoft's current release is Windows Mobile 6, internally code-named "Crossbow'". It was officially released by Microsoft on February 12, 2007 and Microsoft has promised that it will work seamlessly with Windows Vista.
Windows Mobile 5.0 marked the convergence of the Phone Edition and Professional Edition operating systems into one system that contains both phone and PDA capabilities. A 'Phone' application was included in the OS, and all PIM applications were updated to interface with it. Windows Mobile 5.0 was compatible with Microsoft's Smartphone operating system and was capable of running Smartphone applications.
Pocket PCs running previous versions of the operating system generally stored user-installed applications and data in RAM, which meant that if the battery was depleted the device would lose all of its data. Windows Mobile 5.0 solved this problem by storing all user data in persistent (flash) memory, leaving the RAM to be used only for running applications, as it would be on a desktop computer. As a result, Windows Mobile 5.0 Pocket PCs generally had a greater amount of flash memory, and a smaller amount of RAM, compared to earlier devices.
Read more at Wikipedia.org
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