This would generally be observed on a laptop/notebook system when you are using the integrated screen and do not have an external monitor attached. If you try to switch from one display to the other, it will tell you it has no external display to switch to.
Data can be shown on a large screen by using a projector attached to the computer. The projector throws the image onto either a white sheet attached to the wall, or onto a special projector screen. If, by a very large screen? (as in the question) a serial RS232 9 Pin cable can be attached between the computer and the large monitor/screen.
to display on a computer screen
No, a computer screen cannot be affected by a virus. Viruses can display information on a computer screen or mess with your display settings, but they cannot attack the screen itself. Computer screens don't usually have hard drives or CPUs in them, so they cannot be infected with viruses.
The computer and the display screen.
Monitor, or your main display screen
Faisal
the blue lead is the display lead (VGA) the power supply and you might have an ethernet cable (grey one, for internet) the ethernet cable is for the internet if you computer isnt wireless or if you want better connection the VGA is to connect to a computer screen or any external display the power lead is for power.
go to screen saver and select "Marquee" there is a button to edit what you want it to display and how to display it.
If you need a computer buy an iMac if you only need a screen to add to your computer buy a Cinema Display. It is impossible to make a direct comparison between a screen and a computer.
No 4 letter words but: VDU Monitor Display All mean computer screen.
The most common name is a "Monitor" however they can also be called "Visual Display Unit" and "Computer Display". The screen is an important object for being able to see what you are doing while operating your computer unit.
cathode-ray tube