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Windows 1.01 in your Browser – Experience First Version of Microsoft Operating System

When we are talking about Windows 10 and its features, just have a moment to think about its first version and how it looks. Microsoft usually won’t allow the users to download the discontinued operating system officially. But still, you can experience the 30-year-old, Operating System released by Microsoft in your browser itself with any add ons or plugins.

Windows 1.01 Windows 1.0 is the first operating system released by Microsoft, on November 20, 1985. It is a DOS based operating system runs as a graphical 16-bit multi-tasking shell. It includes the basic applications like calculator, calendar, notepad, paint, etc., This allowed the users to do multitasking which is similar to the task bar functionality in the latest windows versions.

Now with the help PCjs emulator, we can experience the Windows 1.01 operating system in our browser. There is no need to install any additional plugins or extensions. It works well in all recent browsers on PC, including Safari on iOS and Chrome on Android.

The below screenshot is the Windows 1.01 running in browser with the help of IBM PC XT Model 5160 JavaScript-based emulator. The emulator is configured with a clock speed of 4.77Mhz, 256KB of RAM and a CGA display, using the original IBM PC Model 5160 ROM BIOS and CGA font ROM.

Windows 1.01-1

You can use the applications and when you exits the browser, it won’t save anything. You can also compare the notepad and paint applications from the first version [Windows 1.01] and the latest version [Windows 10]. This is the online version and everything in the browser is possible with the help of JavaScript.

To try Windows 1.01 in your browser, visit the below links
CGA Version
EGA Version

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