A computer monitor works like a television in that it displays pictures, videos, and movies. The parts of a monitor will depend on which type of monitor you have. In a LCD monitor you have DVI cables, power cord, and polarized glass. A CTR monitor is made up of tubes, vacuums, and power cord. For a detailed look into computer monitors http://computer.howstuffworks.com/monitor6.htm is a good
. tutorial. If you are looking to buy a monitor, http://www.pcworld.com/article/125652/how_to_buy_a_monitor.html explains the differences and pros and cons of each type.