Author Unknown Word processors never display a cursor. You never have to use the spacebar when typing long sentences. Movie character never make typing mistakes.
All monitors display inch-high letters.
High-tech computers, such as those used by NASA, the CIA, or some such governmental institution, will have easy to understand graphical interfaces. Those that don't, have incredibly powerful text-bases command shells that can correctly understand and execute commands typed in plain english. You can access the information on the villain's desktop computer, even if it's turned off. Powerful computers beep whenever you press a key or whenever the screen changes. Some computers also slow down the output on the screen so that it doesn't go faster than you can read.