Windows RT

Starter- Windows and Windows RT were two distinct versions of the Windows operating system that were released concurrently with Windows 8. The key differences between them stem from the hardware they were designed for and the limitations that came with that design.

Here's a breakdown of the differences:

Core Architecture and Hardware-

* Windows (e.g., Windows 8, Windows 10, etc.): This is the traditional version of Windows. It is designed to run on x86/x64 processors (Intel and AMD chips), which are found in most desktop computers and laptops. This architecture allows it to run a vast library of "legacy" Windows applications, also known as Win32 or desktop apps.

* Windows RT: This version was specifically built for the ARM architecture, which is the same processor architecture used in most smartphones and tablets for its power efficiency and longer battery life. Windows RT was only available pre-installed on devices like the Microsoft Surface RT.

Software and Application Compatibility

* Windows: You can install and run virtually any application designed for the Windows platform, whether it's a traditional desktop program (like Adobe Photoshop or Microsoft Office desktop suite) or a modern app from the Microsoft Store.

* Windows RT: This was the most significant limitation of Windows RT. It could not run traditional desktop applications designed for x86 processors. It was restricted to running apps from the Microsoft Store and a limited number of pre-installed, Microsoft-approved desktop applications, such as a special version of Microsoft Office. This restriction was in place to ensure a more "secure" and "reliable" experience, similar to the locked-down nature of mobile operating systems like iOS.

User Interface and Features

* Both Windows and Windows RT shared the same "Modern" user interface (formerly known as Metro), with the tile-based Start screen.

* Windows RT did have a desktop mode, but its functionality was extremely limited. It was primarily there to run the pre-installed Microsoft Office and Internet Explorer. You couldn't install any other third-party desktop applications.

* Windows RT also lacked some of the enterprise features of the full Windows operating system, such as the ability to join an Active Directory domain.

In short, Windows RT was a more closed, device-specific version of Windows designed for the emerging tablet market, with a focus on battery life and a locked-down app ecosystem. The full version of Windows, meanwhile, maintained its legacy of supporting a wide range of hardware and software. Windows RT was ultimately discontinued, but the concept of running Windows on ARM processors was later revisited with "Windows on ARM," which offers better emulation capabilities for traditional desktop applications.