Why QWERTY
According to a widespread explanation, the letters were arranged so that frequently used pairs would not jam in the machine's mechanism. More efficient layouts such as Dvorak exist, but habit is stronger.
The Slovak layout
The Slovak keyboard uses QWERTZ, meaning Y and Z are swapped compared with the English one, and the top row holds letters with diacritics (ľ, š, č, ť, ž, ý, á, í, é). Programmers often switch to the English layout because of the brackets.
Mechanical keyboards
Each key has its own switch with a spring. They are more durable and more precise, and gamers and programmers love them for the way typing feels. Switches are divided into linear, tactile and “clicky”.