This research is Design and construction board led dot matrix was create for study about microcontroller. It apply to use in communication & information indoor type by sending messages from computer on internet network systems. This research has implemented LED dot matrix display for display message characters. The research is composed of 4 major parts: the first part is LED dot matrix display with dimension of 16x192 dots. The second part is the control circuit by using a micro-controller ARM 7 which receives the data from computer the third part by using Microsoft Visual Basic. the forth pat program remote desktop. From tests and results we have found that it can display the message characters which move from Internet System successful.