As we’ve known the full-size keyboard covers all the function areas designed for a standard keyboard. Anyway, with the changing of working situation, more and more sizes developed to cater for people’s different requirement on the keyboard.
The largest size is definitely the full-sized keyboard, it is suitable for the people sitting in the office, especially for the accountants and so on who work closely with the numbers, and the total keys are 105-110.
The compact size would be a better choice if you need a smaller keyboard with all the keys. This kind of keyboard is also named 1800 keyboard. It remains all the keys in full-sized keyboard, while combines type area and navigate area into one, removing the unnecessary space between the type area and number area, so the whole keyboard become integrated one.
Based on the compact keyboard, people continue simplifying the layout by cutting the number pad from the keyboard, it used to be called TKL (ten key less) keyboard with 78 keys.
Furthermore, on request of the super gamers, people go forward with the function keys and navigation keys, and there are only around 60 keys left as extra compact/slim keyboard.
Considering the convenience and usability, the last two types are the most popular now.
