Windows NT 1.01

Windows NT 1.01 is a 16-bit operating system developed by Microsoft which was never released to the public and ended up being replaced by Windows NT 3.1. It was the first edition of the Windows NT series of operating systems.

The main goal of the operating system was to improve the original Windows 1.01 by expanding the limits of the programs, giving the name NT ("New Technology"). It's compatible for the IBM PC 5150 and its clones.

Features
Some of the new programs in Windows NT 1.01 mainly included mostly animation tests, but also included more advanced features such as a hex calculator and a digital clock. The first program added was of a pink ball bouncing on the screen, the last program added was the digital clock.

History
As Windows 1.01 began to grow in popularity, they knew they were gonna have to make updates, one idea though was to make another version of 1.01 and improve it, the idea was set, and soon began adding new programs, the project was made in 1986 and finished the same year, but the operating system was never released to the public, and ended up being replaced by Windows NT 3.1 to be the first release in the NT series.

Errors
The main problem of Windows NT 1.01 was because of the new programs, it caused the Paint application to stop working. This problem was never fixed though.