TriadOS/TrinityOS

TrinityOS was one of the first operating systems after the Big Bang. It was created by the Atomika Corporation in the year -13800000000.
=== TrinityOS U ===
The first version of TrinityOS had the letter "U" at the end of its name, making the version's name "TrinityOS U". The first computer screen Atomika Corp. made to support Trinity had a resolution of only 144 x 72 and had only two colors: black and white. This version was released on the same year the Atomika Corporation was founded.
=== TrinityOS MW ===
Like U, MW had the same logo. This version was released in the year -11000000000. The startup screen is the same, it only had a different wordmark and copyright date.
=== Versions -9B to S ===
This is the first time TrinityOS has a different logo, with it having 9 rectangles instead of just 4. This design was used in versions -9B, -8B, and so on until Version S was released in -4600000000, where the logo was rotated 45° and the center square was joined with the rectangles in the top right and bottom left corners.
=== Versions E and M ===
Apparently, these two versions used the type of design used in TrinityOS S, only E's logo was flipped horizontally, and M's logo joined all the corner rectangles to the center. After this is where the numbered versions continue.
=== Versions -4B to 1 BC ===
This is the first time the computer screen has been upgraded in TrinityOS history. It went from having 2 colors to an 8-color grayscale. The resolution upgraded from 144 x 72 to 240 x 120. The logo stuck with one color until the year -100000000, where the second color was a very light gray, but not that close to white.