This book shows you how to put your own words and pictures on ordinary tv sets. It's also a book on cheap things that can be connected to a microprocessor to get it to do genuinely useful tasks. If you are a computer hobbyist with a home-brew mashup, a serious professional data processor concerned with low-cost small machine systems, a video games freak, or a ham working with rtty, you will find in depth information on tv typewriter technology, which today represents the only truly low-cost ($30 to $150) microcomputer and small-systems display interface. If you are a software specialist, we will be showing you the hardware that makes your software work, giving you the depth of background you will need for effective and efficient small-systems coding. If you are teaching microprocessors, you will find this book useful as a primary or supplemental text on the high school through university levels. If you are into video recording, cable tv, or studio broadcasting, you will find techniques here for low-cost titling and annotation of existing program material, as well as the means for video art synthesis. And, if you are an electronics technician, herein lies the answers on the standard ASCII code; serial transmission formats; keyboards and encoders; Teletype, cassette, and modem techniques; along with many of the integrated circuits and systems concepts that back them up.