I cut my teeth with DOS and Netware, used Windows until the day 98 was released (had been using the GM for a month), and cut over to Slackware as my daily driver. Dabbled with Redhat before stabilising on Debian, which I’ve never found a need to change from for my headless boxes.
One thing I specifically remember was hand tuning my X11 config to drive my 15” Trinitron at 1024x768 @ ~68Hz.
Every number system is base 10.
Binary is base 1+1.
Ternary is base 2+1.
Octal is base 7+1.
Decimal is base 9+1.
Duodecimal is base B+1.
Hexadecimal is base F+1.