This was the project I did as part of my Undergraduate project. The important features are as follows:

• The goal of the device was to make a small, economical yet accurate device to measure the vital parameters of the body.
• The target audience was the bed ridden older age group who needed immediate attention in case of abrupt change in the vital parameters.
• The device measured heart rate, blood oxygen saturation and body temperature and gave alarms incase any of the parameter swayed away from the set parameters.
• The key feature of the device was a bar graph display which gave biofeedback.
• Atmel 89C52 was used to control all the devices and provide display the parameters on a 16X2 LCD Display.