Subject: Why are computers not displayed accurately in movies.

Why are computers not displayed accurately in movies.

In most movies I have seen, computers are not displayed accurately.
In almost every one, the computers use a totally unrealistic operating
system.  Why the extra trouble.  The studios must spend much extra 
money creating these faux operating systems.  Another thing is the 
sounds that a computer makes.  Even in movies today, each keystroke
corresponds with a beep or blip sound made by the computer.  Sometimes
it almost sounds like a teletype machine.

Re:Why are computers not displayed accurately in movies.