Build a Composite Video Text Terminal

摘要

This project started out to re-create something resembling the terminals that we used on in the 1980s. Unless you are interested in that sort of project, the original intent for this circuit wouldn't be of use. But the simplicity of the circuit provides an easy way to build a text-based or even graphics-based monochrome display that will drive any monitor with a composite video input. It provides an inexpensive way to produce a display for diagnostics, monitoring and general visual displays, especially given the low cost of the monitor used for the prototype.