1.1 General DMC series is the name given to the dot matrix character LCD display modules that have been developed by OPTREX CORPORATION. The modules consist of high contrast and large viewing angle TN and STN type LC (liquid crystal) panels. Each module contains a CMOS controller and all necessary drivers which have low power consumption. The controller is equipped with an internal character generator ROM, RAM and RAM for display data. All display functions are controllable by instructions making interfacing practical. Both display data RAM and character generator RAM can be read making it possible to use any part not used for display as general data RAM. The products of this series therefore have wide application possibilities in the field of terminal display or display for measuring devices.