A Brahmi phonemics based keyboard that enables user to provide textual inputs in any of the Indian Languages has been envisaged. The keyboard can be incorporated into any computer based system capable of handling Unicode compliant inputs. The layout of the keyboard includes a plurality of input keys corresponding to the characters of an Indian language, and the input keys, especially the character input keys are grouped into a plurality of clusters. The keyboard acts as a multimodal device by enabling a user to provide textual input in a plurality of Indian languages. The layout of the keyboard includes diacritic markers, formatting commands, numeric keys and functional keys being grouped into different clusters for ease of accessibility.