CRT (cathode-ray tube) monitors are still being manufactured, but in far fewer numbers than the preferred LCD monitor - and for good reason: a CRT computer monitor is heavy, bulky, and has a lower resolution compared to more modern versions such as the LCD monitor. They also display in a 4:3 aspect ratio, which is not ideal for watching movies shot in widescreen (16:9) format, unlike the preferred LCD monitor.
A computer monitor's aspect ratio is the ratio of an image's width to its height, so an LCD monitor with a 4:3 aspect ratio is almost square, while one with a ratio of 16:9 is wider than its height. A CRT computer monitor is sometimes the preferred choice among graphic artists, movie editors and other industry professionals who want the full range of the colour palette, the wider viewing angle and the true, deep blacks that a cathode-ray tube can offer (which an LCD monitor cannot).
LCD monitor types are similar to plasma televisions, both of which have a flat-screen.