a monitor is an output device because you cannot give the computer any commands with it, like you can with mice and keyboards. There is one contingency, however. If you have a touch-screen monitor, then it is an input device, because you are interacting with the computer with it.
Scott Peterson was charged with the murder of his pregnant wife Laci Denise Peterson and their unborn son Conner Peterson who disappeared sometime between Dec. 23 and Dec. 24, 2002. The badly decomposed remains of Laci Peterson and the couple's fetus washed ashore in April 2003, not far from where Peterson said he went on a solo fishing trip the day she vanished.
Laci Denise Peterson was an American woman who was the subject of a highly publicized murder case after she disappeared while eight months pregnant with her first child. She was reportedly last seen alive on December 24, 2002. Her husband, Scott Peterson, was later convicted of murder in the first degree for her death, and in the second degree for the death of their prenatal son, Conner. Scott is on death row at San Quentin State Prison.