Digital signage is an emerging new communication technology. Digital signage system reduces the environmental costs associated with traditional printed signage. It is used to display the dynamic content (e.g., audio, video, announcements, webpages) using Internet of Things (IoT). It uses Raspberry pi a small credit card sized computer to store locally and process the information and also reduce the production cost. In order to update the information the content management software is developed using free open source software. The used programming technologies are WAMP server, Html Abstraction Markup Language (HAML), My structured Query Language (MySQL) database and Python. This proposed system is used to display the required information to the students in college campus and where the real time information is needed (e.g., Universities, Hospitals, Railway Station, Corporate buildings, malls, subways). Moreover the digital signage system is flexible and dynamic compared with printable signage system.