The term TYPING UNIT can be broken down into two crossword solutions: KEYSTROKE (9 letters). A keystroke is an individual press of a key on a keyboard. It is used to type characters and commands into a computer or other device. Keystrokes are the basis of most modern computer input, and are used in everything from word processing to gaming. A typing unit is a device that allows a user to type characters and commands into a computer or other device. It typically consists of a keyboard, mouse, and other input devices.