Digital Readout Thick Upright is a TTF character that was designed in order to help you change the regular appearance of your papers. All you need to do is get and install the font onto your computer then use it when writing your text documents to see how it will modify their aspect.
To install Digital Readout Thick Upright all you have to do is use the 'Install' function available when right-clicking the font. Another way of getting the font registered onto your system is to drag and drop it into the Fonts directory. This folder is available from the Control Panel page.