I live in South Texas and am doing some mission work across the border in Matamoros Mexico. One of the families I have contact with has 3 disabled daughters, and the oldest is unable to speak. She understands conversation and is able to read and write (though with difficulty) They rely on a battery and a small solar panel to supply what little electricity they have. A computer would use too much power, so I am looking for a way to build what used to be called a video typerwriter.
The displays I have seen tend to be tiny and hard to read from very far away, and I would like to make a device so she could type and then show it to someone sitting 2 meters, 6 feet away in a chair.
Might I be able to use multiple displays and a large font?