learn fast to understand Windows 95

Windows 95
After Windows 3.11, Microsoft began to start developing a version of Windows which oriented to the user code-named Chicago. Chicago was designed to mmeiliki support for pre-emptive multitasking 32-bit as well as contained in the OS / 2 and Windows NT, although the 16-bit kernel is still contained in it for the sake of backward compatibility. The Win32 API was first introduced in Windows NT was adopted as a new programming interface standards-based 32-bit, with Win16 compatibility is also maintained by using a technique called the "thunking". The new GUI is also owned by the operating system, although not originally planned as part of the operating system when it is released. Indeed, some elements of the user interface of the Cairo borrowed and added to the operating system tersbut as other aspects of the versions (notably Plug and Play).
Microsoft does not replace all the code to 32-bit Windows; many parts of it remained in the form of 16-bit (though not using real-mode directly), for reasons of backward compatibility, performance, and development time. This and the fact that many weaknesses in the design of previous Windows versions, make a new operating system is disrupted efficiency and stability.
Finally, the marketing of Microsoft using Windows 95 as the name of the product name for Chicago when it was released on August 24, 1995. Microsoft has two advantages of this launch: 1) it is impossible for consumers to run Windows 95 on the DOS operating system is not by Microsoft which much cheaper; 2) although traces of DOS were never completely removed from the operating system, instead of the version of plugging a DOS version to be published as part of the boot process, Windows 95 runs by itself in 386 Enhanced mode, using virtual memory and memory addressing model of flats 32-bit. These features make Win32 applications to address the virtual RAM maximum of 2 gigabytes (with 2 gigabytes rest are reserved for the operating system), and in theory prevent the application to the memory space which owned by another Win32 application without the approval of the operating system. In this case, the functionality of Windows 95 approaching what is owned by Windows NT, although Windows 95/98 / Me does not support more than 512 megabytes without editing which system configuration hassle.
Behind the success of Microsoft, IBM continued to market OS / 2, to produce the OS / 2 version 3.0 and OS / 2 Warp (version 4.0). IBM responded to complaints filed by consumers regarding the need for high computer hardware required by the OS / 2 version 2.0, OS / 2 version 3.0 was significantly slimmer by optimizing the size and speed. Before Windows 95 was released, OS / 2 Warp 3.0 even has bundled in some major hardware providers in Germany. However, with the release of Windows 95, OS / 2 was again lost market share back, was taken over by Windows 95.
It may not be possible to find out what is the reason why OS / 2 failed to gain a large market share. Although OS / 2 continues to be able to run Windows 3.1 applications, is already no shortage again, but at a fraction of the Windows API called Win32s. Unlike Windows 3.1, IBM does not have access to the source code of Windows 95 and do not want to use the time and resources available to do the emulation of the Win32 API. IBM also introduced the OS / 2 in the case of United States vs. Microsoft, to blame marketing tactics on the part of Microsoft, but many people may agree that the problem in the marketing and support of IBM was very less than the software developers that cause failures OS / 2.
Before replacing it with a new version of Windows, Microsoft released Windows 95 in five different versions, namely as follows:
Windows 95 - the actual release of Windows 95
Windows 95 A - includes updates Windows 95 Original Service Release 1 (OSR1) is entered directly on the installation.
Windows 95 B - includes several other major updates, as well as the FAT32 file system, and Internet Explorer 3.0. This release is also known as Windows 95 OSR2, or many people in Indonesia call it Windows 97.
Windows 95 B USB - Windows 95 or Windows 95 OSR2.1 is a version that offers hardware support for bus-based Universal Serial Bus / USB.
Windows 95 C - or Windows 95 OSR2.5 includes all the above features, plus Internet Explorer 4.0. This version is the most recent version of Windows 95 was released from the series.
Windows 95 OSR2, OSR2.1 and OSR2.5 not released to the public, but only to OEMs who want to use the operating system into the computer makes. Some OEM company even sells a new hard disk with the operating system Windows 95 OSR2 in it.
In addition to the features contained in the Windows 95, Microsoft also introduced the Microsoft Plus! for Windows 95 which includes some additional features not shared by Windows 95.