Unfortunately, the CRT ordinary people are probably thinking of is not going to work with the RasPi. VGA is right out. This old crt works because it was composi

Unfortunately, the CRT ordinary people are probably thinking of is not going to work with the RasPi. VGA is right out. This old crt works because it was composite, like a TV. RasPis will drive old TV's (and tv like monitors) and new hdmi/dvi monitors, but not the huge amount of middle aged VGA monitors. Its perfectly understandable why they made this choice. VGA on board would double the price, but there it is. Most old computer monitors won't work with raspi. But don't forget most TV's will.