'Seven segment display' is a very popular device that displays Indo-Arabic numerals by turning on or off the individual segments in it. Currently this display device is used to represent the numerals of almost all European languages. However Indian languages are lacking of a proper segmented display device to display its numerals. Over the past few years many research works have been done with Bangla language which result many proposals to display Bangla numerals. However we found very few significant works in displaying the numerals of other Indian languages. Also in the proposed devices for displaying Bangla numerals we found the number of segments are 16, 11, 10, 9, 8, 14 (dual 7 segments) etc. In this paper we are proposing a unified seven segment display device which is capable of displaying Bangla, English and most of the Indian languages' numerals that include Assamese, Manipuri, Hindi, Nepali, Marathi, Gujarati, Punjabi, Kannada, Telugu, Sikkim, Bhutan etc. Our proposed display device has the same simplicity that of English with an acceptable level of accuracy and uniformity.