The document discusses the different types of keys found on a keyboard. It identifies 6 main types: 1) Alphabetic keys which contain the letters A-Z, 2) Number keys containing 0-9, 3) Function keys marked F1-F12, 4) Special keys which modify other keys, 5) Arrow keys for cursor movement, and 6) Space bar for adding spaces between words. Additional keys discussed include the Shift, Caps Lock, Backspace, Enter, Delete, and Tab keys. In total, there are at least 10 different types of keys that make up the keyboard.