Bedside monitor is a digital device which used in healthcare to record, view and supervision of physiological changes. Devices are attached with the patient body with the help of wires and send electronic signal to monitor. Basically device are multiple color and different graphical users and used in different ways depending on hospital needs when doctor or nurse wants to measure heart rate, respiration rate, blood pressure, temperature and breathing rate. Monitor has also alarm which used whenever body function needs any attention. In the ICU, monitor is normally used the entire time and that having modular design with easy interchange, display analysis and printing output. There are many types of bedside monitoring such as brain monitoring, multimodal monitoring, head trauma monitoring, neuro monitoring, on line data analysis, cerebral auto regulation and intensive care monitoring.