Windows CE

Microsoft Windows CE

Company / developer	Microsoft
Programmed in	C[1]
OS family	Windows CE
Source model	Closed source (shared source kernel[2])
Initial release	16 November 1996; 14 years ago (1996-11-16)
Latest stable release	7.0 / 1 March 2011; 8 months ago (2011-03-01)
Available language(s)	Multilingual
Supported platforms	x86, MIPS, ARM, (SuperH[3] up to 6.0 R2)
Kernel type	Monolithic Hybrid
License	MS-EULA
Official website	Windows CE

Microsoft Windows CE (now officially known as Windows Embedded Compact and previously also known as Windows Embedded CE ,^[4][5] and sometimes abbreviated WinCE) is an operating system developed by Microsoft for embedded systems. Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows.^[6] It is not to be confused with Windows Embedded Standard which is an NT-based componentized version of desktop Microsoft Windows.

Microsoft licenses Windows CE to OEMs and device makers. The OEMs and device makers can modify and create their own user interfaces and experiences, while Windows CE provides the technical foundation to do so.

The current version of Windows Embedded Compact supports Intel x86 and compatibles, MIPS, and ARM processors.

Features

Windows CE is optimized for devices that have minimal storage; a Windows CE kernel may run in under a megabyte of memory. Devices are often configured without disk storage, and may be configured as a "closed" system that does not allow for end-user extension (for instance, it can be burned into ROM). Windows CE conforms to the definition of a real-time operating system, with a deterministic interrupt latency. From Version 3 and onward, the system supports 256 priority levels^[7] and uses priority inheritance for dealing with priority inversion. The fundamental unit of execution is the thread. This helps to simplify the interface and improve execution time.

Microsoft has stated that the "CE" is not an intentional initialism, but many people believe CE stands for "Consumer Electronics" or "Compact Edition". Microsoft says the letters instead imply a number of Windows CE design precepts, including "Compact, Connectable, Compatible, Companion, and Efficient."^[8] The first version—known during development under the code name "Pegasus"—featured a Windows-like GUI and a number of Microsoft's popular applications, all trimmed down for smaller storage, memory, and speed of the palmtops of the day.

Since then, Windows CE has evolved into a component-based, embedded, real-time operating system. It is no longer targeted solely at hand-held computers.^[9] Many platforms have been based on the core Windows CE operating system, including Microsoft's AutoPC, Pocket PC 2000, Pocket PC 2002, Windows Mobile 2003, Windows Mobile 2003 SE, Windows Mobile 5.0, Windows Mobile 6, Smartphone 2002, Smartphone 2003, Portable Media Center, Zune, Windows Phone and many industrial devices and embedded systems. Windows CE even powered select games for the Dreamcast, was the operating system of the Gizmondo handheld, and can partially run on modified Xbox game consoles.

A distinctive feature of Windows CE compared to other Microsoft operating systems is that large parts of it are offered in source code form. First, source code was offered to several vendors, so they could adjust it to their hardware. Then products like Platform Builder (an integrated environment for Windows CE OS image creation and integration, or customized operating system designs based on CE) offered several components in source code form to the general public. However, a number of core components that do not need adaptation to specific hardware environments (other than the CPU family) are still distributed in binary only form.

Development tools

Visual Studio

Microsoft Visual Studio 2008 and earlier support projects for Windows CE / Windows Mobile, producing executable programs and platform images either as an emulator or attached by cable to an actual mobile device. A mobile device is not necessary to develop a CE program. The .NET Compact Framework supports a subset of the .NET Framework with projects in C#, and VB.NET, but not Managed C++. "Managed" applications employing the .NET Compact Framework also require devices with significantly larger memories (8 MB or more) while unmanaged applications can still run successfully on smaller devices.

In Visual Studio 2010, the Windows Phone Developer Tools are used as an extension, allowing Windows Phone 7 apps to be designed and tested within Visual Studio.

CodeGear Delphi Prism

CodeGear Delphi Prism, which runs in Visual Studio, also supports the .NET Compact Framework and thus can be used to develop mobile applications. It employs the Oxygene compiler created by RemObjects, which targets .NET, the .NET Compact Framework, and Mono. Its command-line compiler is available free of charge.

Free Pascal and Lazarus

Free Pascal introduced the Windows CE port in Version 2.2.0, targeting ARM and x86 architectures. Later, the Windows CE header files were translated for use with Lazarus, a rapid application development (RAD) software package based on Free Pascal. Windows CE applications are designed and coded in the Lazarus integrated development environment (IDE) and compiled with an appropriate cross compiler.^[10]

Basic4ppc

Basic4ppc—which is a programming language similar to Visual Basic—targets the .NET Compact Framework and supports Windows CE and Windows Mobile devices.

GLBasic

GLBasic is a very easy to learn and use BASIC dialect that compiles for many platforms, including Windows CE and Windows Mobile. It can be extended by writing inline C/C++ code.

LabVIEW

LabVIEW is a graphical programming language, supporting many platforms, also windows CE.

Platform Builder

This programming tool is used for building the platform (BSP + Kernel), device drivers (shared source or custom made) and also the application. This is a one step environment to get the system up and running. One can also use Platform Builder to export an SDK (software development kit) for the target microprocessor (SuperH, x86, MIPS, ARM etc.) to be used with another associated tool set named below.

Embedded Visual C++ (eVC)

The Embedded Visual C++ tool is for development of embedded application for Windows CE based devices. This tool can be used standalone using the SDK exported from Platform Builder or using the Platform Builder using the Platform Manager connectivity setup.

AutoHotkey

A port of the open source macro-creation and automation software utility AutoHotkey is available for Windows CE, which allows the construction of macros and simple GUI applications developed by systems analyst Jonathan Maxian Timkang.^[11]

Relationship to Windows Mobile, Pocket PC, and SmartPhone

Timeline of Windows CE Development

Often Windows CE, Windows Mobile, and Pocket PC are used interchangeably, in part due to their common origin. This practice is not entirely accurate. Windows CE is a modular/componentized operating system that serves as the foundation of several classes of devices. Some of these modules provide subsets of other components' features (e.g. varying levels of windowing support; DCOM vs COM), others which are separate (Bitmap or TrueType font support), and others which add additional features to another component. One can buy a kit (the Platform Builder) which contains all these components and the tools with which to develop a custom platform. Applications such as Excel Mobile/Pocket Excel are not part of this kit. The older Handheld PC version of Pocket Word and several other older applications are included as samples, however.

Windows Mobile is best described as a subset of platforms based on a Windows CE underpinning. Currently, Pocket PC (now called Windows Mobile Classic), SmartPhone (Windows Mobile Standard), and Pocket PC Phone Edition (Windows Mobile Professional) are the three main platforms under the Windows Mobile umbrella. Each platform uses different components of Windows CE, plus supplemental features and applications suited for their respective devices.

Pocket PC and Windows Mobile are Microsoft-defined custom platforms for general PDA use, consisting of a Microsoft-defined set of minimum profiles (Professional Edition, Premium Edition) of software and hardware that is supported. The rules for manufacturing a Pocket PC device are stricter than those for producing a custom Windows CE-based platform. The defining characteristics of the Pocket PC are the touchscreen as the primary human interface device and its extremely portable size.

CE v3.0 is the basis for Pocket PC 2002. A successor to CE v3.0 is CE.net.^[12] "PocketPC [is] a separate layer of code on top of the core Windows CE OS... Pocket PC is based on Windows CE, but it's a different offering." And licensees of Pocket PC are forbidden to modify the WinCE part.^[13]

The SmartPhone platform is a feature-rich OS and interface for cellular phone handsets. SmartPhone offers productivity features to business users, such as email, and multimedia abilities for consumers. The SmartPhone interface relies heavily on joystick navigation and PhonePad input. Devices running SmartPhone do not include a touchscreen interface. SmartPhone devices generally resemble other cellular handset form factors, whereas most Phone Edition devices use a PDA form factor with a larger display.

Versions

Version	Changes
1.0	Released November 18, 1996.[14] Codename "Alder".[15] Devices named "handheld PC" (HPC).[12]
2.0	Released September 29, 1997.[16] Codename "Birch".[15] Devices named "Palm-sized PC".[12] Real-time deterministic task scheduling. Architectures: ARM, MIPS, PowerPC, StrongARM, SuperH and x86. 32-bit color screens. SSL 2.0 and SSL 3.0.
3.0	Released June 15, 2000.[17] Codename "Cedar".[15] Major recode that made CE hard real time down to the microsecond level. Base for the Pocket PC 2000, Handheld PC 2000, Pocket PC 2002 and Smartphone 2002.[12] Priority levels was increased from 8 to 256.[12] Object store was increased from 65,536 to 4.19 million allowed objects.[12] Restricted access to critical APIs or restricting write access to parts of the registry.[12]
4.x	Released January 7, 2002.[18] Codename "Talisker/Jameson/McKendric".[15] Driver structure changed greatly, new features added. Base for "Pocket PC 2003".[12] Bluetooth support.[12][19] TLS (SSL 3.1), IPsec L2TP VPN, or Kerberos.[12]
5.x	Windows CE 5.0 Released in August 2004.[15] Adds lots of features. Codename "Macallan".[15] Automatic report of bugs to the manufacturer.[20] Direct3D Mobile, a COM-based version of Windows XP's DirectX multimedia API.[20] DirectDraw for 2D graphics and DirectShow for camera and video digitisation support.[20] Remote Desktop Protocol (RDP) support.[21]
6.0	Released in September 2006. Codename "Yamazaki".[15] Process address space is increased from 32 MB to 2 GB.[22] Number of processes has been increased from 32 to 32,768.[23] User mode and kernel mode device drivers are possible. 512 MB physically managed memory Device.exe, filesys.exe, GWES.exe has been moved to Kernel mode. SetKMode and set process permissions not possible. System call performance improved.[24]
7.0	Released in March 2011. Dual-core CPU support (SMP, ARMv7) Wi-Fi Positioning System Bluetooth 3.0 + HS Cellcore DLNA (Digital Living Network Alliance) DRM technology Media Transfer Protocol Windows Phone 7 IE with Flash 10.1 support NDIS 6.1 support UX C++ XAML API using technologies like Windows Presentation Foundation and Silverlight for attractive and functional user interfaces Advanced touch and gesture input Kernel support for 3 GB physical RAM and supports ARMv7 assembly[25]

See also

• ActiveSync
• Dreamcast
• Handheld PC
• Handheld PC Explorer
• List of Windows CE Devices
• Palm-size PC
• Pocket PC
• Portable Media Center
• Tablet PC
• Windows CE 3.0
• Windows CE 5.0
• Windows Embedded CE 6.0
• Windows Embedded Compact 7
• Windows Mobile
• Windows Phone 7
• Microsoft Kin
• Zune HD

Notes and references

1. ^ "Special Report: Windows CE 6 arrives with 100% kernel source". windowsfordevices.com. 2006-11-01. http://www.windowsfordevices.com/c/a/News/Special-Report-Windows-CE-6-arrives-with-100-kernel-source. Retrieved 2011-07-20. 
2. ^ Microsoft opens full Windows CE kernel source. Linux Devices' article(Nov. 01, 2006).
3. ^ "Windows CE overview". Archived from the original on 28 May 2011. http://web.archive.org/web/20100528144239/http://www.emacinc.com/operating_systems/windows_ce.htm. 
4. ^ "Microsoft renames Windows CE, sets CE 6.0 launch date". windowsfordevices.com. 2006-09-22. http://www.windowsfordevices.com/news/NS5452934855.html. Retrieved 2011-07-20. 
5. ^ "Windows Embedded Homepage". Microsoft.com. http://www.microsoft.com/windows/embedded/default.mspx. Retrieved 2010-11-14. 
6. ^ "How does Windows Embedded CE 6.0 Start? - Windows CE Base Team Blog - Site Home - MSDN Blogs". Blogs.msdn.com. 2007-12-18. http://blogs.msdn.com/b/ce_base/archive/2007/11/26/how-does-windows-embedded-ce-6.0-start_3f00_.aspx. Retrieved 2010-11-14. 
7. ^ "Priority Levels". Msdn.microsoft.com. http://msdn.microsoft.com/en-us/library/bb202761.aspx. Retrieved 2010-11-14. 
8. ^ "The Meaning of "CE" in Windows CE". Q166915. Microsoft. 2002-09-03. http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q166915. Retrieved 2006-09-15. 
9. ^ "Embedded Platform | Integrated Development Environment (IDE) | Windows CE". Microsoft.com. http://www.microsoft.com/windowsembedded/en-us/products/windowsce/technical-specifications.mspx. Retrieved 2010-11-14. 
10. ^ WinCE port - Lazarus wiki
11. ^ [1] - AutoHotkeyCE
12. ^ ^{a b c d e f g h i j} Pöhls, Henrich C. (2003-09-05), "Risk Analysis of Mobile Devices with Special Concern of Malware Contamination" (PDF), Diploma Thesis (University of Hamburg): p. 27, http://www.2000grad.com/papers/dpa_henrich_poehls.pdf, retrieved 2009-10-24 
13. ^ Smith, Tony (2003-04-16). "Why Pocket PC isn't WinCE". The Register. http://www.theregister.co.uk/2003/04/16/why_pocket_pc_isnt_wince. Retrieved 2009-10-24. 
14. ^ "Microsoft Announces Broad Availability of Handheld PCs With Windows CE". Microsoft News Center. 1996-11-18. http://www.microsoft.com/presspass/press/1996/Nov96/wincepr.mspx. Retrieved 2011-06-20. 
15. ^ ^{a b c d e f g} Hall, Mike (2006-09-19). "Windows Embedded Blog: CE 6.0 - why the codename "Yamazaki" ?". MSDN Blogs. http://blogs.msdn.com/mikehall/archive/2006/09/19/763146.aspx. Retrieved 2009-10-24. 
16. ^ "Microsoft Announces Release of Windows CE 2.0". Microsoft News Center. 1997-09-29. http://www.microsoft.com/presspass/press/1997/Sept97/WINCE2PR.mspx. Retrieved 2011-06-20. 
17. ^ "Microsoft Announces Availability of Windows CE 3.0". Microsoft News Center. 2000-06-15. http://www.microsoft.com/presspass/press/2000/Jun00/CELaunchPR.mspx. Retrieved 2011-06-20. 
18. ^ "Microsoft Launches Windows CE .NET". Microsoft News Center. 2002-01-07. http://www.microsoft.com/presspass/press/2002/jan02/01-07CENetLaunchPR.mspx. Retrieved 2011-06-20. 
19. ^ Walker, Geoff (2002-01-07). "Windows CE .net — Microsoft's successor to Windows CE 3.0". Pen Computing Magazine. http://www.pencomputing.com/WinCE/dotnet.html. Retrieved 2009-10-24. 
20. ^ ^{a b c} Smith, Tony (2004-03-29). "MS readies WinCE 5.0 preview". The Register. http://www.theregister.co.uk/2004/03/29/ms_readies_wince. Retrieved 2009-10-24. 
21. ^ "The History of the PDA" (DOC). http://seditaville.com/academic/summary/The%20History%20of%20Microsoft%20Mobile%20OS(Ver%202).doc.  090517 seditaville.com
22. ^ "Windows Embedded CE 6.0 Advanced Memory Management". http://msdn.microsoft.com/en-us/library/bb331824.aspx.  Retrieved 2011-05-25
23. ^ "Introduction to Microsoft embedded technologies - Session 1" (PPT). http://www.embedded.net.nz/Presentations%20PPT%20%20PDF/Embedded%20Introduction%20-%20Session%201.ppt.  090517 embedded.net.nz
24. ^ Babu, K. Ashok (2006-11-22). "Differences between Windows CE 5.0 and Windows CE 6.0". WindowsForDevices.com. http://www.windowsfordevices.com/articles/AT9457847627.html. Retrieved 2009-10-24. 
25. ^ Veerabahu, Maharajan (2010-12-24). "Comparison between Windows Embedded Compact 7 (WEC7) and Windows CE 6". e-consystems.com. http://www.e-consystems.com/WindowsCE6vs7.asp. Retrieved 2010-12-24. 

External links

• Windows CE Product Page at Microsoft
• Benchmarking Real-time Determinism in Microsoft Windows CE
• A Brief History of Windows CE, by HPC:Factor with screenshots of the various versions
• Site hosted by Windows CE, Website hosted by Handheld PC. Unfortunately offline now; only this archived version exists
• Windows XP Embedded on MSDN
• Windows CE: C# Applications developer
• Portable CE 3.0
• Go Embedded! An Embedded Systems blog that devotes a great deal of attention to Windows CE
• Technical articles on the Windows CE technology
• Mike Hall's Windows Embedded Blog
• e-con's Windows CE Blog
• Choosing the correct version of Windows Embedded operating systems
• Find windows embedded devices